SuperMarket Database (C++ Program)

#include<fstream.h>
#include<iomanip.h>
#include<stdio.h>
#include<string.h>
#include<ctype.h>
#include<windows.h>
#include<process.h>
#include<time.h>

void header(int);
int login(int);
void footer();
void menu();
void showtime();
void admin_menu();
int admin_ctrl(int);
int init_all(int);
void logged_off();
char convert(char []);
int new_product_main(int);
void all_product_main(int);							// ALL PRODUCT DATA
int search_product_main(int&);						// SEARCH PRODUCT DATA
int delete_product_main(int);						// DELETE PRODUCT DATA
int edit_product_main(int&);						// EDIT PRODUCT DATA
int billing_main(int);
int parental_ctrl();
int sales_history();
int invoice_history();

char username[20];									//
char password[20];									//  
int invoice=1;										//


//<||===========CLASS DEFINITION===========||>
class product
{
private:
	void convert(char []);
protected:
public:
	float price;
	char barcode[20];
	char prod_name[50];
	int enter_data(int,int);
	int enter_data(int,char []);							// FOR JUMPING FROM SEARCH AND EDIT
	void show_data();
	int edit_data(char[],int,int);
	float give_price(int qty=1)
	{
		return qty*price;
	}
	int scan(char [],int);
	product()
	{
		strcpy(barcode,"0000");
		strcpy(prod_name,"");
		price=0.0;
	}
};

class sales:public product
{
private:
	void convert(char []);
public:
	struct item_list
	{
		char item_bc[20];
		char item_name[50];
		float item_rate;
		int qty;
		float tot_prc_item;
	};
	item_list item[150];
	int invoice_no;
	int new_bill(int);
	float total_bill;
	void show_item(item_list,int);
	int item_ctr;
	float discount;
	float net_total;

};
//<||===========CLASS DEFINITION END===========||>

//<||===========CREATE OBJECT===========||>
product prod[500];
product try_prod[500];
sales sale[500];
//<||===========CREATE OBJECT END===========||>

int product::enter_data(int i,int times)
{
	int flag=0;
	char temp_price[10];
	do
	{
BARCODE:
		header(1);
		cout<<"\t\t\t\tNEW PRODUCT ENTRY"<<endl;
		cout<<"\t\t\t\t-----------------"<<endl<<endl;
		cout<<"\n\n";
		cout<<"--------------------------------------------------------------------------------"<<endl;
		cout<<"SNO.\tBARCODE\t\t\tPRODUCT NAME\t\t\tPRICE"<<endl<<endl;
		cout<<"--------------------------------------------------------------------------------"<<endl;
		if(!flag&&times==1)
			cout<<"\t\t\t\t\t\t          HIT \'0\' TO GO BACK <<";
		if(!flag&&times!=1)
			cout<<"\t\t\t\t\t\t      HIT \'0\' TO SAVE & EXIT <<";
		if(flag==1&&times!=1)
			cout<<"!!.....|| BARCODE EXISTS ||.....!!\t\t      HIT \'0\' TO SAVE & EXIT <<";
		if(flag==1&&times==1)
			cout<<"!!.....|| BARCODE EXISTS ||.....!!\t\t          HIT \'0\' TO GO BACK <<";
		if(flag==2&&times==1)
			cout<<"!!.....|| ENTER THE ITEM BARCODE ||.....!!\t\t  HIT \'0\' TO GO BACK <<";
		if(flag==2&&times!=1)
			cout<<"!!.....|| ENTER THE ITEM BARCODE ||.....!!\t      HIT \'0\' TO SAVE & EXIT <<";
		if(flag==3&&times==1)
			cout<<"!!.....|| INVALID BARCODE ||.....!!\t\t          HIT \'0\' TO GO BACK <<";
		if(flag==3&&times!=1)
			cout<<"!!.....|| INVALID BARCODE ||.....!!\t\t      HIT \'0\' TO SAVE & EXIT <<";
		cout<<"\n\n";
		cout<<i<<"."<<'\t';
		cin.getline(barcode,20);
		convert("barcode");									//CONVERT TO CAPITAL
		flag=0;
		if(!strcmp(barcode,""))
			flag=2;
		if(flag!=2)
			flag=scan("barcode",i);							//CHECKING BARCODE REPTITION
		if(strlen(barcode)>15)
			flag=3;
		if(!strcmp(barcode,"0"))							//EXIT
		{
			if(times!=1)
			{
				header(1);
				cout<<"\t\t\t\tNEW PRODUCT ENTRY"<<endl;
				cout<<"\t\t\t\t-----------------"<<endl<<endl;
				cout<<"\n\n";
				cout<<"--------------------------------------------------------------------------------"<<endl;
				cout<<"SNO.\tBARCODE\t\t\tPRODUCT NAME\t\t\tPRICE"<<endl<<endl;
				cout<<"--------------------------------------------------------------------------------"<<endl;
				cout<<"\n\n";
				cout<<" >> SAVING DATA...."<<endl;
				for(i=0;i<=700000000;i++);
			}
			return 0;
		}
	}while(flag);
PRODUCT:
	flag=0;
	do
	{
		header(1);
		cout<<"\t\t\t\tNEW PRODUCT ENTRY"<<endl;
		cout<<"\t\t\t\t-----------------"<<endl<<endl;
		cout<<"\n\n";
		cout<<"--------------------------------------------------------------------------------"<<endl;
		cout<<"SNO.\tBARCODE\t\t\tPRODUCT NAME\t\t\tPRICE"<<endl<<endl;
		cout<<"--------------------------------------------------------------------------------"<<endl;
		if(!flag)
			cout<<"\t\t\t\t\t\t     HIT \'0\' TO EDIT BARCODE <<";
		if(flag==1)
			cout<<"!!.....|| ENTER THE PRODUCT NAME ||.....!!\t     HIT \'0\' TO EDIT BARCODE <<";
		if(flag==2&&flag!=1)
			cout<<"!!.....|| ATLEAST 1 ALPHABET REQD. ||.....!!\t     HIT \'0\' TO EDIT BARCODE <<";
		if(flag==3&&flag!=2&&flag!=1)
			cout<<"!!.....|| PRODUCT NAME EXISTS ||.....!!\t\t     HIT \'0\' TO EDIT BARCODE <<";
		if(flag==4&&flag!=3&&flag!=2&&flag!=1)
			cout<<"!!.....|| PRODUCT NAME TOO LONG ||.....!!\t     HIT \'0\' TO EDIT BARCODE <<";
		flag=0;
		cout<<"\n\n";
		if(strlen(barcode)>=8)
			cout<<i<<"."<<'\t'<<barcode<<"\t\t";
		else
			cout<<i<<"."<<'\t'<<barcode<<"\t\t\t";
		cin.getline(prod_name,50);
		if(!strcmp(prod_name,""))
			flag=1;
		if(strlen(prod_name)>40)
		{
			flag=4;
		}
		if(flag!=1&&flag!=4)
			flag=scan(prod_name,-1);						//ONLY DIGITS ??
		convert("prod_name");								//CONVERT TO CAPITAL
		if(i!=1)
		{
			for(int num=1;num<i;++num)
			{
				if(!strcmp(prod[num].prod_name,prod[i].prod_name))
				{
					flag=3;
					break;
				}
			}
		}
	}while(flag);
	flag=0;
	if(!strcmp(prod_name,"0"))
		goto BARCODE;
	do
	{
		header(1);
		cout<<"\t\t\t\tNEW PRODUCT ENTRY"<<endl;
		cout<<"\t\t\t\t-----------------"<<endl<<endl;
		cout<<"\n\n";
		cout<<"--------------------------------------------------------------------------------"<<endl;
		cout<<"SNO.\tBARCODE\t\t\tPRODUCT NAME\t\t\tPRICE"<<endl<<endl;
		cout<<"--------------------------------------------------------------------------------"<<endl;
		if(!flag)
			cout<<"\t\t\t\t\t        HIT \'0\' TO EDIT PRODUCT NAME <<";
		if(flag==2)
			cout<<"!!.....|| ENTER THE PRODUCT PRICE ||.....!!     HIT \'0\' TO EDIT PRODUCT NAME <<";
		if(flag==1)
			cout<<"!.....INVALID PRICE.....!\t\t\tHIT \'0\' TO EDIT PRODUCT NAME <<";
		flag=0;
		cout<<"\n\n";
		if(strlen(barcode)>=8)
		{
			if(strlen(prod_name)>30)
				cout<<i<<"."<<'\t'<<barcode<<"\t\t"<<prod_name<<endl<<"\t\t\t\t\t\t\t\t";
			else if(strlen(prod_name)>=24)
				cout<<i<<"."<<'\t'<<barcode<<"\t\t"<<prod_name<<"\t";
			else if(strlen(prod_name)>=16)
				cout<<i<<"."<<'\t'<<barcode<<"\t\t"<<prod_name<<"\t\t";
			else if(strlen(prod_name)>=8)
				cout<<i<<"."<<'\t'<<barcode<<"\t\t"<<prod_name<<"\t\t\t";
			else
				cout<<i<<"."<<'\t'<<barcode<<"\t\t"<<prod_name<<"\t\t\t\t";
		}
		else
		{
			if(strlen(prod_name)>30)
				cout<<i<<"."<<'\t'<<barcode<<"\t\t\t"<<prod_name<<endl<<"\t\t\t\t\t\t\t\t";
			else if(strlen(prod_name)>=24)
				cout<<i<<"."<<'\t'<<barcode<<"\t\t\t"<<prod_name<<"\t";
			else if(strlen(prod_name)>=16)
				cout<<i<<"."<<'\t'<<barcode<<"\t\t\t"<<prod_name<<"\t\t";
			else if(strlen(prod_name)>=8)
				cout<<i<<"."<<'\t'<<barcode<<"\t\t\t"<<prod_name<<"\t\t\t";
			else
				cout<<i<<"."<<'\t'<<barcode<<"\t\t\t"<<prod_name<<"\t\t\t\t";
		}
		cout<<"SR ";
		cin.getline(temp_price,10);
		flag=scan(temp_price,0);									//CHECKING FOR ALPHABET IN 'PRICE'
		convert(temp_price);
		if(!strcmp(temp_price,""))
			flag=2;
		if(!strcmp(temp_price,"0"))
		{
			goto PRODUCT;
		}
	}while(flag);
	price=atof(temp_price);
	return 1;
}

int product::enter_data(int sno,char bc[])
{
	int flag=0,i=0;
	char temp_price[10];
	strcpy(barcode,bc);
PRODUCT:
	flag=0;
	do
	{
		header(1);
		cout<<"\t\t\t\tNEW PRODUCT ENTRY"<<endl;
		cout<<"\t\t\t\t-----------------"<<endl<<endl;
		cout<<"\n\n";
		cout<<"--------------------------------------------------------------------------------"<<endl;
		cout<<"SNO.\tBARCODE\t\t\tPRODUCT NAME\t\t\tPRICE"<<endl<<endl;
		cout<<"--------------------------------------------------------------------------------"<<endl;
		if(!flag)
			cout<<"\t\t\t\t\t\t          HIT \'0\' TO GO BACK <<";
		if(flag==1)
			cout<<"!!.....|| ENTER THE PRODUCT NAME ||.....!!\t          HIT \'0\' TO GO BACK <<";
		if(flag==2&&flag!=1)
			cout<<"!!.....|| ATLEAST 1 ALPHABET REQD. ||.....!!\t             HIT \'0\' GO BACK <<";
		if(flag==3&&flag!=2&&flag!=1)
			cout<<"!!.....|| PRODUCT NAME EXISTS ||.....!!\t\t          HIT \'0\' TO GO BACK <<";
		if(flag==4&&flag!=3&&flag!=2&&flag!=1)
			cout<<"!!.....|| PRODUCT NAME TOO LONG ||.....!!\t          HIT \'0\' TO GO BACK <<";
		flag=0;
		cout<<"\n\n";
		if(strlen(barcode)>=8)
			cout<<sno<<"."<<'\t'<<barcode<<"\t\t";
		else
			cout<<sno<<"."<<'\t'<<barcode<<"\t\t\t";
		cin.getline(prod_name,50);
		if(!strcmp(prod_name,""))
			flag=1;
		if(strlen(prod_name)>40)
		{
			flag=4;
		}
		if(flag!=1&&flag!=4)
			flag=scan(prod_name,-1);						//ONLY DIGITS ??
		convert("prod_name");								//CONVERT TO CAPITAL
		if(sno!=1)
		{
			for(int num=1;num<sno;++num)
			{
				if(!strcmp(prod[num].prod_name,prod[sno].prod_name))
				{
					flag=3;
					break;
				}
			}
		}
	}while(flag);
	flag=0;
	if(!strcmp(prod_name,"0"))
		return 0;
	do
	{
		header(1);
		cout<<"\t\t\t\tNEW PRODUCT ENTRY"<<endl;
		cout<<"\t\t\t\t-----------------"<<endl<<endl;
		cout<<"\n\n";
		cout<<"--------------------------------------------------------------------------------"<<endl;
		cout<<"SNO.\tBARCODE\t\t\tPRODUCT NAME\t\t\tPRICE"<<endl<<endl;
		cout<<"--------------------------------------------------------------------------------"<<endl;
		if(!flag)
			cout<<"\t\t\t\t\t        HIT \'0\' TO EDIT PRODUCT NAME <<";
		if(flag==2)
			cout<<"!!.....|| ENTER THE PRODUCT PRICE ||.....!!     HIT \'0\' TO EDIT PRODUCT NAME <<";
		if(flag==1)
			cout<<"!.....INVALID PRICE.....!\t\t\tHIT \'0\' TO EDIT PRODUCT NAME <<";
		flag=0;
		cout<<"\n\n";
		if(strlen(barcode)>=8)
		{
			if(strlen(prod_name)>30)
				cout<<sno<<"."<<'\t'<<barcode<<"\t\t"<<prod_name<<endl<<"\t\t\t\t\t\t\t\t";
			else if(strlen(prod_name)>=24)
				cout<<sno<<"."<<'\t'<<barcode<<"\t\t"<<prod_name<<"\t";
			else if(strlen(prod_name)>=16)
				cout<<sno<<"."<<'\t'<<barcode<<"\t\t"<<prod_name<<"\t\t";
			else if(strlen(prod_name)>=8)
				cout<<sno<<"."<<'\t'<<barcode<<"\t\t"<<prod_name<<"\t\t\t";
			else
				cout<<sno<<"."<<'\t'<<barcode<<"\t\t"<<prod_name<<"\t\t\t\t";
		}
		else
		{
			if(strlen(prod_name)>30)
				cout<<sno<<"."<<'\t'<<barcode<<"\t\t\t"<<prod_name<<endl<<"\t\t\t\t\t\t\t\t";
			else if(strlen(prod_name)>=24)
				cout<<sno<<"."<<'\t'<<barcode<<"\t\t\t"<<prod_name<<"\t";
			else if(strlen(prod_name)>=16)
				cout<<sno<<"."<<'\t'<<barcode<<"\t\t\t"<<prod_name<<"\t\t";
			else if(strlen(prod_name)>=8)
				cout<<sno<<"."<<'\t'<<barcode<<"\t\t\t"<<prod_name<<"\t\t\t";
			else
				cout<<sno<<"."<<'\t'<<barcode<<"\t\t\t"<<prod_name<<"\t\t\t\t";
		}
		cout<<"SR ";
		cin.getline(temp_price,10);
		flag=scan(temp_price,0);									//CHECKING FOR ALPHABET IN 'PRICE'
		convert(temp_price);
		if(!strcmp(temp_price,""))
			flag=2;
		if(!strcmp(temp_price,"0"))
		{
			goto PRODUCT;
		}
	}while(flag);
	price=atof(temp_price);
	header(1);
	cout<<"\t\t\t\tNEW PRODUCT ENTRY"<<endl;
	cout<<"\t\t\t\t-----------------"<<endl<<endl;
	cout<<"\n\n";
	cout<<"--------------------------------------------------------------------------------"<<endl;
	cout<<"SNO.\tBARCODE\t\t\tPRODUCT NAME\t\t\tPRICE"<<endl<<endl;
	cout<<"--------------------------------------------------------------------------------"<<endl;
	cout<<"\n\n";
	cout<<" >> SAVING DATA...."<<endl;
	for(i=0;i<=700000000;i++);
	return 1;
}

void product::convert(char check[])
{
	int i=0;
	if(!strcmp(check,"barcode"))
	{
		for(i=0;barcode[i]!='\0';++i)
			barcode[i]=toupper(barcode[i]);
	}
	if(!strcmp(check,"prod_name"))
	{
		for(i=0;prod_name[i]!='\0';++i)
			prod_name[i]=toupper(prod_name[i]);
	}
}

int product::scan(char check[],int num)
{
	int i=0,dot=0,alpha=0;
	if(!strcmp(check,"barcode"))							//CHECKING BARCODE REPITITION
	{
		for(i=0;i<num;++i)
		{
			if(!strcmp(prod[num].barcode,prod[i].barcode))
				return 1;
		}
	}
	if(!strcmp(check,"product"))
	{
		for(i=1;i<num;++i)
		{
			if(!strcmp(prod[num].prod_name,prod[i].prod_name))
				return 3;
		}
	}
	if(num==-1)												//CHECKING PRODUCT NAME IS GENIUNE || !
	{
		if(!strcmp(check,"0"))
		{
			return 0;
		}
		for(i=0;check[i]!='\0';++i)
		{
			if(isalpha(check[i]))
				return 0;
		}
		return 2;
	}
	if(strcmp(check,"barcode"))								//CHECKING PRICE IS GENUINE || !
	{
		for(i=0;check[i]!='\0';++i)
		{
			if(isalpha(check[i]))
				return 1;
			if(!isdigit(check[i])&&check[i]!='.')
				return 1;
			if(check[i]=='.')
				++dot;
			if(dot>1)
				return 1;
		}
	}
	return 0;
}

void product::show_data()
{
	if(strlen(barcode)>=8)
	{
		if(strlen(prod_name)>30)
			cout<<'\t'<<barcode<<"\t\t"<<prod_name<<endl<<"\t\t\t\t\t\t\t\t"<<price<<" SR";
		else if(strlen(prod_name)>=24)
			cout<<'\t'<<barcode<<"\t\t"<<prod_name<<"\t"<<price<<" SR";
		else if(strlen(prod_name)>=16)
			cout<<'\t'<<barcode<<"\t\t"<<prod_name<<"\t\t"<<price<<" SR";
		else if(strlen(prod_name)>=8)
			cout<<'\t'<<setw(3)<<barcode<<"\t\t"<<prod_name<<"\t\t\t"<<price<<" SR";
		else
			cout<<'\t'<<barcode<<"\t\t"<<prod_name<<"\t\t\t\t"<<price<<" SR";
	}
	else
	{
		if(strlen(prod_name)>30)
			cout<<'\t'<<barcode<<"\t\t\t"<<prod_name<<endl<<"\t\t\t\t\t\t\t\t"<<price<<" SR";
		else if(strlen(prod_name)>=24)
			cout<<'\t'<<barcode<<"\t\t\t"<<prod_name<<"\t"<<price<<" SR";
		else if(strlen(prod_name)>=16)
			cout<<'\t'<<barcode<<"\t\t\t"<<prod_name<<"\t\t"<<price<<" SR";
		else if(strlen(prod_name)>=8)
			cout<<'\t'<<barcode<<"\t\t\t"<<prod_name<<"\t\t\t"<<price<<" SR";
		else
			cout<<'\t'<<barcode<<"\t\t\t"<<prod_name<<"\t\t\t\t"<<price<<" SR";
	}	
}

int product::edit_data(char choice[],int sno,int post)
{
	if(!strcmp(choice,"barcode"))
	{
EDIT_BARCODE:
		int flag=0,i=0;
		char new_barcode[20],choice[5],news[150]="ITEM EDITED";
		do
		{
			header(1);
			cout<<"\t\t\t\tEDIT PRODUCT ENTRY"<<endl;
			cout<<"\t\t\t\t------------------"<<endl<<endl;
			cout<<"\n";
			cout<<"   >> FIND PRODUCT      >> SELECT FIELD      >> EDIT FIELD      >> CONFIRM"<<endl;
			cout<<"                                                -----------"<<endl;
			cout<<"\n\n";
			cout<<"\n\n";
			cout<<"--------------------------------------------------------------------------------"<<endl;
			cout<<"     OLD BARCODE : "<<barcode<<endl;
			cout<<"     NEW BARCODE : "<<""<<endl<<endl;
			cout<<"--------------------------------------------------------------------------------"<<endl;
			if(!flag||flag==2)
				cout<<"!!.....|| ENTER NEW BARCODE ||.....!!\t\t\t  HIT \'0\' TO GO BACK <<";			
			if(flag==1)
				cout<<"!!.....|| BARCODE EXISTS ||.....!!\t\t\t  HIT \'0\' TO GO BACK <<";
			flag=0;
			cout<<"\n\n";
			cout<<"     ";
			cin.getline(new_barcode,20);
			if(!strcmp(new_barcode,""))
				flag=2;
			if(!strcmp(new_barcode,"0"))
			{
				return 0;
			}
			if(flag!=2)
			{
				for(i=0;new_barcode[i]!='\0';++i)
					new_barcode[i]=toupper(new_barcode[i]);			//CONVERT TO CAPITAL
				for(i=0;i<sno;++i)
				{
					if(i!=post)
						if(!strcmp(new_barcode,prod[i].barcode))
							flag=1;
						
				}													//CHECKING BARCODE REPTITION
			}
		}while(flag);
		flag=0;
		do
		{
			header(1);
			cout<<"\t\t\t\tEDIT PRODUCT ENTRY"<<endl;
			cout<<"\t\t\t\t------------------"<<endl<<endl;
			cout<<"\n";
			cout<<"   >> FIND PRODUCT      >> SELECT FIELD      >> EDIT FIELD      >> CONFIRM"<<endl;
			cout<<"                                                                   --------"<<endl;
			cout<<"\n\n";
			cout<<"\n\n";
			cout<<"--------------------------------------------------------------------------------"<<endl;
			cout<<"     OLD BARCODE : "<<barcode<<endl;
			cout<<"     NEW BARCODE : "<<new_barcode<<endl<<endl;
			cout<<"--------------------------------------------------------------------------------"<<endl;
			cout<<"\n\n";
			cout<<"     Are You SURE To Change The BARCODE Of This Item ?       >> Y : YES"<<endl<<endl;
			cout<<"                                                             >> N : NO"<<endl<<endl; 
			cout<<"                                                             >> G : GO BACK"<<endl; 
			cout<<"\n";
			if(flag==1)
				cout<<"                                        !.....ENTER Y / N / G.....!";
			if(flag==2)
				cout<<"                                         !.....INVALID CHOICE.....!";
			cout<<"\n\n";
			flag=0;
			cout<<"                                                Enter Your CHOICE : ";
			cin.getline(choice,5);		
			if(!strcmp(choice,""))
				flag=1;
			if(flag!=1)
				if(strcmpi(choice,"Y")&&strcmpi(choice,"N")&&strcmpi(choice,"G"))
					flag=2;
		}while(flag);
		if(!strcmpi(choice,"G"))
		{
			goto EDIT_BARCODE;
		}
		if(!strcmpi(choice,"N"))
		{
			header(1);
			cout<<"\t\t\t\tEDIT PRODUCT ENTRY"<<endl;
			cout<<"\t\t\t\t------------------"<<endl<<endl;
			cout<<"\n";
			cout<<"   >> FIND PRODUCT      >> SELECT FIELD      >> EDIT FIELD      >> CONFIRM"<<endl;
			cout<<"                                                                   --------"<<endl;
			cout<<"\n\n";
			cout<<"\n\n";
			cout<<"--------------------------------------------------------------------------------"<<endl;
			cout<<"            		  !.....|| BARCODE NOT CHANGED ||.....!"<<endl;
			cout<<"--------------------------------------------------------------------------------"<<endl;
			cout<<"\nHit ENTER To Continue...";
			cin.get();
			return 0;
		}
		if(!strcmpi(choice,"Y"))
		{
			header(1);
			cout<<"\t\t\t\tEDIT PRODUCT ENTRY"<<endl;
			cout<<"\t\t\t\t------------------"<<endl<<endl;
			cout<<"\n";
			cout<<"   >> FIND PRODUCT      >> SELECT FIELD      >> EDIT FIELD      >> CONFIRM"<<endl;
			cout<<"                                                                   --------"<<endl;
			strcpy(barcode,new_barcode);
			cout<<"\n\n";
			cout<<"\n\n";
			cout<<"--------------------------------------------------------------------------------"<<endl;
			cout<<"		                CHANGING BARCODE......"<<endl;
			cout<<"--------------------------------------------------------------------------------"<<endl;
			for(i=0;i<=700000000;i++);
			header(1);
			cout<<"\t\t\t\tEDIT PRODUCT ENTRY"<<endl;
			cout<<"\t\t\t\t------------------"<<endl<<endl;
			cout<<"\n";
			cout<<"   >> FIND PRODUCT      >> SELECT FIELD      >> EDIT FIELD      >> CONFIRM"<<endl;
			cout<<"                                                                   --------"<<endl;
			cout<<"\n\n";
			cout<<"\n\n";
			cout<<"--------------------------------------------------------------------------------"<<endl;
			cout<<"                !.....|| BARCODE CHANGED SUCCESSFULLY ||.....!"<<endl;
			cout<<"--------------------------------------------------------------------------------"<<endl;
			cout<<"\nHit ENTER To Continue...";
			cin.get();
			return 0;
		}
	}
	if(!strcmp(choice,"product"))
	{
EDIT_PRODUCT_NAME:
		int flag=0,i=0;
		char new_name[50],choice[5];
		do
		{
			header(1);
			cout<<"\t\t\t\tEDIT PRODUCT ENTRY"<<endl;
			cout<<"\t\t\t\t------------------"<<endl<<endl;
			cout<<"\n";
			cout<<"   >> FIND PRODUCT      >> SELECT FIELD      >> EDIT FIELD      >> CONFIRM"<<endl;
			cout<<"                                                -----------"<<endl;
			cout<<"\n\n";
			cout<<"\n\n";
			cout<<"--------------------------------------------------------------------------------"<<endl;
			cout<<"     OLD NAME : "<<prod_name<<endl;
			cout<<"     NEW NAME : "<<""<<endl<<endl;
			cout<<"--------------------------------------------------------------------------------"<<endl;
			if(!flag||flag==1)
				cout<<"!!.....|| ENTER NEW PRODUCT NAME ||.....!!\t\t  HIT \'0\' TO GO BACK <<";
			if(flag==2&&flag!=1)
				cout<<"!!.....|| ATLEAST 1 ALPHABET REQD. ||.....!!\t\t  HIT \'0\' TO GO BACK <<";
			if(flag==3&&flag!=2&&flag!=1)
				cout<<"!!.....|| PRODUCT NAME EXISTS ||.....!!\t\t\t  HIT \'0\' TO GO BACK <<";
			if(flag==4&&flag!=3&&flag!=2&&flag!=1)
				cout<<"!!.....|| PRODUCT NAME TOO LONG ||.....!!\t     HIT \'0\' TO EDIT BARCODE <<";
			flag=0;
			cout<<"\n\n";
			cout<<"     ";
			cin.getline(new_name,50);
			if(!strcmp(new_name,""))
				flag=1;
			if(!strcmp(new_name,"0"))
			{
				return 0;
			}
			if(strlen(new_name)>40)
			{
				flag=4;
			}
			for(i=0;new_name[i]!='\0';++i)
				new_name[i]=toupper(new_name[i]);			//CONVERT TO CAPITAL
			if(flag!=1&&flag!=4)
				flag=scan(new_name,-1);
			for(i=1;i<sno;++i)
			{
				if(i!=post)
					if(!strcmp(new_name,prod[i].prod_name))
					{
						flag=3;
						break;
					}
			}
		}while(flag);
		flag=0;
		do
		{
			header(1);
			cout<<"\t\t\t\tEDIT PRODUCT ENTRY"<<endl;
			cout<<"\t\t\t\t------------------"<<endl<<endl;
			cout<<"\n";
			cout<<"   >> FIND PRODUCT      >> SELECT FIELD      >> EDIT FIELD      >> CONFIRM"<<endl;
			cout<<"                                                                   --------"<<endl;
			cout<<"\n\n";
			cout<<"\n\n";
			cout<<"--------------------------------------------------------------------------------"<<endl;
			cout<<"     OLD NAME : "<<prod_name<<endl;
			cout<<"     NEW NAME : "<<new_name<<endl<<endl;
			cout<<"--------------------------------------------------------------------------------"<<endl;
			cout<<"\n\n";
			cout<<"     Are You SURE To Change The NAME Of This Item ?          >> Y : YES"<<endl<<endl;
			cout<<"                                                             >> N : NO"<<endl<<endl; 
			cout<<"                                                             >> G : GO BACK"<<endl; 
			cout<<"\n";
			if(flag==1)
				cout<<"                                        !.....ENTER Y / N / G.....!";
			if(flag==2)
				cout<<"                                         !.....INVALID CHOICE.....!";
			cout<<"\n\n";
			flag=0;
			cout<<"                                                Enter Your CHOICE : ";
			cin.getline(choice,5);		
			if(!strcmp(choice,""))
				flag=1;
			if(flag!=1)
				if(strcmpi(choice,"Y")&&strcmpi(choice,"N")&&strcmpi(choice,"G"))
					flag=2;
		}while(flag);
		if(!strcmpi(choice,"G"))
		{
			goto EDIT_PRODUCT_NAME;
		}
		if(!strcmpi(choice,"N"))
		{
			header(1);
			cout<<"\t\t\t\tEDIT PRODUCT ENTRY"<<endl;
			cout<<"\t\t\t\t------------------"<<endl<<endl;
			cout<<"\n";
			cout<<"   >> FIND PRODUCT      >> SELECT FIELD      >> EDIT FIELD      >> CONFIRM"<<endl;
			cout<<"                                                                   --------"<<endl;
			cout<<"\n\n";
			cout<<"\n\n";
			cout<<"--------------------------------------------------------------------------------"<<endl;
			cout<<"            	    !.....|| PRODUCT NAME NOT CHANGED ||.....!"<<endl;
			cout<<"--------------------------------------------------------------------------------"<<endl;
			cout<<"\nHit ENTER To Continue...";
			cin.get();
			return 0;
		}
		if(!strcmpi(choice,"Y"))
		{
			header(1);
			cout<<"\t\t\t\tEDIT PRODUCT ENTRY"<<endl;
			cout<<"\t\t\t\t------------------"<<endl<<endl;
			cout<<"\n";
			cout<<"   >> FIND PRODUCT      >> SELECT FIELD      >> EDIT FIELD      >> CONFIRM"<<endl;
			cout<<"                                                                   --------"<<endl;
			strcpy(prod_name,new_name);
			cout<<"\n\n";
			cout<<"\n\n";
			cout<<"--------------------------------------------------------------------------------"<<endl;
			cout<<"		             CHANGING PRODUCT NAME......"<<endl;
			cout<<"--------------------------------------------------------------------------------"<<endl;
			for(i=0;i<=700000000;i++);
			header(1);
			cout<<"\t\t\t\tEDIT PRODUCT ENTRY"<<endl;
			cout<<"\t\t\t\t------------------"<<endl<<endl;
			cout<<"\n";
			cout<<"   >> FIND PRODUCT      >> SELECT FIELD      >> EDIT FIELD      >> CONFIRM"<<endl;
			cout<<"                                                                   --------"<<endl;
			cout<<"\n\n";
			cout<<"\n\n";
			cout<<"--------------------------------------------------------------------------------"<<endl;
			cout<<"                !.....|| PRODUCT NAME CHANGED SUCCESSFULLY ||.....!"<<endl;
			cout<<"--------------------------------------------------------------------------------"<<endl;
			cout<<"\nHit ENTER To Continue...";
			cin.get();
			return 0;
		}
	}
	if(!strcmp(choice,"price"))
	{
EDIT_PRODUCT_PRICE:
		int flag=0,i=0;
		char temp_price[10],choice[5];
		do
		{
			header(1);
			cout<<"\t\t\t\tEDIT PRODUCT ENTRY"<<endl;
			cout<<"\t\t\t\t------------------"<<endl<<endl;
			cout<<"\n";
			cout<<"   >> FIND PRODUCT      >> SELECT FIELD      >> EDIT FIELD      >> CONFIRM"<<endl;
			cout<<"                                                -----------"<<endl;
			cout<<"\n\n";
			cout<<"\n\n";
			cout<<"--------------------------------------------------------------------------------"<<endl;
			cout<<"     OLD PRICE : "<<give_price()<<" SR"<<endl;
			cout<<"     NEW PRICE : "<<""<<endl<<endl;
			cout<<"--------------------------------------------------------------------------------"<<endl;
			if(!flag||flag==2)
				cout<<"\t\t\t\t\t\t\t  HIT \'0\' TO GO BACK <<";
			if(flag==1)
				cout<<"!.....INVALID PRICE.....!\t\t\t\t  HIT \'0\' TO GO BACK <<";
			flag=0;
			cout<<"\n\n";
			cout<<"     ";
			cin.getline(temp_price,10);
			flag=scan(temp_price,0);									//CHECKING FOR ALPHABET IN 'PRICE'
			convert(temp_price);
			if(!strcmp(temp_price,""))
				flag=2;
			if(!strcmp(temp_price,"0"))
				return 0;
		}while(flag);
		flag=0;
		do
		{
			header(1);
			cout<<"\t\t\t\tEDIT PRODUCT ENTRY"<<endl;
			cout<<"\t\t\t\t------------------"<<endl<<endl;
			cout<<"\n";
			cout<<"   >> FIND PRODUCT      >> SELECT FIELD      >> EDIT FIELD      >> CONFIRM"<<endl;
			cout<<"                                                                   --------"<<endl;
			cout<<"\n\n";
			cout<<"\n\n";
			cout<<"--------------------------------------------------------------------------------"<<endl;
			cout<<"     OLD PRICE : "<<give_price()<<" SR"<<endl;
			cout<<"     NEW PRICE : "<<temp_price<<" SR"<<endl<<endl;
			cout<<"--------------------------------------------------------------------------------"<<endl;
			cout<<"\n\n";
			cout<<"     Are You SURE To Change The PRICE Of This Item ?         >> Y : YES"<<endl<<endl;
			cout<<"                                                             >> N : NO"<<endl<<endl; 
			cout<<"                                                             >> G : GO BACK"<<endl; 
			cout<<"\n";
			if(flag==1)
				cout<<"                                        !.....ENTER Y / N / G.....!";
			if(flag==2)
				cout<<"                                         !.....INVALID CHOICE.....!";
			cout<<"\n\n";
			flag=0;
			cout<<"                                                Enter Your CHOICE : ";
			cin.getline(choice,5);		
			if(!strcmp(choice,""))
				flag=1;
			if(flag!=1)
				if(strcmpi(choice,"Y")&&strcmpi(choice,"N")&&strcmpi(choice,"G"))
					flag=2;
		}while(flag);
		if(!strcmpi(choice,"G"))
		{
			goto EDIT_PRODUCT_PRICE;
		}
		if(!strcmpi(choice,"N"))
		{
			header(1);
			cout<<"\t\t\t\tEDIT PRODUCT ENTRY"<<endl;
			cout<<"\t\t\t\t------------------"<<endl<<endl;
			cout<<"\n";
			cout<<"   >> FIND PRODUCT      >> SELECT FIELD      >> EDIT FIELD      >> CONFIRM"<<endl;
			cout<<"                                                                   --------"<<endl;
			cout<<"\n\n";
			cout<<"\n\n";
			cout<<"--------------------------------------------------------------------------------"<<endl;
			cout<<"            	    !.....|| PRODUCT PRICE NOT CHANGED ||.....!"<<endl;
			cout<<"--------------------------------------------------------------------------------"<<endl;
			cout<<"\nHit ENTER To Continue...";
			cin.get();
			return 0;
		}
		if(!strcmpi(choice,"Y"))
		{
			header(1);
			cout<<"\t\t\t\tEDIT PRODUCT ENTRY"<<endl;
			cout<<"\t\t\t\t------------------"<<endl<<endl;
			cout<<"\n";
			cout<<"   >> FIND PRODUCT      >> SELECT FIELD      >> EDIT FIELD      >> CONFIRM"<<endl;
			cout<<"                                                                   --------"<<endl;
			price=atof(temp_price);
			cout<<"\n\n";
			cout<<"\n\n";
			cout<<"--------------------------------------------------------------------------------"<<endl;
			cout<<"		            CHANGING PRODUCT PRICE......"<<endl;
			cout<<"--------------------------------------------------------------------------------"<<endl;
			for(i=0;i<=700000000;i++);
			header(1);
			cout<<"\t\t\t\tEDIT PRODUCT ENTRY"<<endl;
			cout<<"\t\t\t\t------------------"<<endl<<endl;
			cout<<"\n";
			cout<<"   >> FIND PRODUCT      >> SELECT FIELD      >> EDIT FIELD      >> CONFIRM"<<endl;
			cout<<"                                                                   --------"<<endl;
			cout<<"\n\n";
			cout<<"\n\n";
			cout<<"--------------------------------------------------------------------------------"<<endl;
			cout<<"                !.....|| PRODUCT PRICE CHANGED SUCCESSFULLY ||.....!"<<endl;
			cout<<"--------------------------------------------------------------------------------"<<endl;
			cout<<"\nHit ENTER To Continue...";
			cin.get();
			return 0;
		}
	}
	return 1;
}

int sales::new_bill(int sno)
{
	int srl=1,i=0,flag=0,j=0,k=0,z=0;
	float disc=0.0;
	char temp_qty[6],choice[5],temp_dsc[10],temp_cash[10];
	total_bill=0.0;
ENTER_BC_BILL:
	flag=0;
	do
	{
		if(flag==12)
			flag=0;
		if(srl>1)
		{
			total_bill=0.0;
			for(k=1;k<srl;++k)
				total_bill+=item[k].tot_prc_item;
		}
		header(1);
		cout<<"\t\t\t\t  SALES & INVOICE"<<endl;
		cout<<"\t\t\t\t  ---------------"<<endl<<endl;
		cout<<"\n";
		cout<<" >> INVOICE NUMBER : "<<::invoice<<"\t\t\t\t\t"<<"    "<<total_bill<<" SR"<<setw(10)<<"TOTAL <<";
		cout<<"\n\n";
		cout<<"--------------------------------------------------------------------------------"<<endl;
		cout<<"SNO.\tBARCODE\t\tPRODUCT NAME\t\t\tRATE\tQTY\tPRICE"<<endl<<endl;
		cout<<"--------------------------------------------------------------------------------"<<endl;
		if(!flag&&srl==1)
			cout<<"\t\t\t\t\t\t          HIT \'0\' TO GO BACK <<";
		if(!flag&&srl>1)
		{
			cout<<" >> HIT \'0\' TO EDIT PREVIOUS ITEM\t\t    HIT \'ENTER\' TO CHECK OUT <<";
		}
		if(flag==1)
			cout<<"!!.....|| ENTER BARCODE ||.....!!\t\t          HIT \'0\' TO GO BACK <<";
		if(flag==2&&srl==1)
			cout<<"!!.....|| INVALID BARCODE ||.....!!\t\t          HIT \'0\' TO GO BACK <<";
		if(flag==2&&srl>1)
			cout<<"!!.....|| INVALID BARCODE ||.....!!\t\t    HIT \'ENTER\' TO CHECK OUT <<";
		cout<<"\n\n";
		flag=0;
		if(srl>1)
		{
			for(k=1;k<srl;++k)
			{
				cout<<k<<".";show_item(item[k],1);
			}

		}
		cout<<srl<<"."<<'\t';
		cin.getline(item[srl].item_bc,20);
		if(!strcmp(item[srl].item_bc,"0")&&srl==1)
			break;
		if(!strcmp(item[srl].item_bc,"0")&&srl>1)
		{
			--srl;
			goto ENTER_BC_BILL;
		}
		if(!strcmp(item[srl].item_bc,"")&&srl==1)
			flag=1;
		if(!strcmp(item[srl].item_bc,"")&&srl>1)
			break;
		if(flag!=1)
		{
			for(i=1;i<sno;++i)
			{
				if(!strcmpi(item[srl].item_bc,prod[i].barcode))
				{
					flag=5;
					strcpy(item[srl].item_name,prod[i].prod_name);

					item[srl].item_rate=prod[i].give_price();
					item[srl].item_bc[7]='\0';
					for(k=0;item[srl].item_bc[k]!='\0';++k)
						item[srl].item_bc[k]=toupper(item[srl].item_bc[k]);
					break;
				}
				else
					flag=2;
			}
		}
		if(flag==5)
		{
			flag=0;
			do
			{
				header(1);
				cout<<"\t\t\t\t  SALES & INVOICE"<<endl;
				cout<<"\t\t\t\t  ---------------"<<endl<<endl;
				cout<<"\n";
				cout<<" >> INVOICE NUMBER : "<<::invoice<<"\t\t\t\t\t"<<"    "<<total_bill<<" SR"<<setw(10)<<"TOTAL <<";
				cout<<"\n\n";
				cout<<"--------------------------------------------------------------------------------"<<endl;
				cout<<"SNO.\tBARCODE\t\tPRODUCT NAME\t\t\tRATE\tQTY\tPRICE"<<endl<<endl;
				cout<<"--------------------------------------------------------------------------------"<<endl;
				if(!flag)
					cout<<"\t\t\t\t\t\t          HIT \'0\' TO GO BACK <<";
				if(flag==5)
					cout<<"!!.....|| ENTER QUANTITY ||.....!!\t\t          HIT \'0\' TO GO BACK <<";
				if(flag==6)
					cout<<"!!.....|| INVALID QUANTITY ||.....!!\t\t\t  HIT \'0\' TO GO BACK <<";
				flag=0;
				cout<<"\n\n";	
				if(srl>1)
				{
					for(k=1;k<srl;++k)
					{
						cout<<k<<".";show_item(item[k],1);
					}
				}
				cout<<srl<<".";show_item(item[srl],0);
				cin.getline(temp_qty,6);
				if(!strcmp(temp_qty,""))
					flag=5;
				if(!strcmp(temp_qty,"0"))
					goto ENTER_BC_BILL;
				if(flag!=5)
				{
					for(j=0;temp_qty[j]!='\0';++j)
					{
						if(!isdigit(temp_qty[j]))
						{
							flag=6;
							break;
						}
					}
				}
				if(flag==0)
				{
					if(srl!=1)
					{
						for(z=1;z<srl;z++)
						{
							if(!strcmp(item[z].item_bc,item[srl].item_bc))
							{
								item[z].qty+=atoi(temp_qty);
								item[z].tot_prc_item=item[z].qty*item[z].item_rate;
								flag=2;
								--srl;
							}
						}
					}
					if(flag!=2)
					{
						item[srl].qty=atoi(temp_qty);
						item[srl].tot_prc_item=item[srl].qty*item[srl].item_rate;
					}
					flag=0;
				}
			}while(flag);
			flag=12;
			++srl;
		}
	}while(flag);
		item_ctr=(srl-1);
	if(!strcmp(item[srl].item_bc,"0"))
		return 0;
	flag=0;
	do
	{
		header(1);
		cout<<"\t\t\t\t  SALES & INVOICE"<<endl;
		cout<<"\t\t\t\t  ---------------"<<endl<<endl;
		cout<<"\n";
		cout<<" >> INVOICE NUMBER : "<<::invoice<<"\t\t\t\t\t"<<"    "<<total_bill<<" SR"<<setw(10)<<"TOTAL <<";
		cout<<"\n\n";
		cout<<"--------------------------------------------------------------------------------"<<endl;
		cout<<"SNO.\tBARCODE\t\tPRODUCT NAME\t\t\tRATE\tQTY\tPRICE"<<endl<<endl;
		cout<<"--------------------------------------------------------------------------------"<<endl;
		cout<<"\n";
		if(srl>1)
		{
			for(k=1;k<srl;++k)
			{
				cout<<k<<".";show_item(item[k],1);
				
			}

		}
		cout<<"--------------------------------------------------------------------------------"<<endl;
		cout<<"\n\n";
		cout<<"                 Are You SURE To CHECK OUT ?       >> ENTER : YES"<<endl<<endl;
		cout<<"                                                   >>     N : NO "<<endl<<endl; 
		cout<<"                                                   >>     C : CANCEL INVOICE"<<endl; 
		cout<<"\n";
		if(flag==2)
		cout<<"                                   !.....INVALID CHOICE.....!";
		flag=0;
		cout<<"\n\n";
		cout<<"                                          Enter Your CHOICE : ";
		cin.getline(choice,5);		
		if(!strcmp(choice,""))
			break;
		if(!strcmpi(choice,"C"))
			return 0;
		if(!strcmpi(choice,"N"))
			goto ENTER_BC_BILL;
		if(strcmpi(choice,"N")&&strcmpi(choice,"C"))
			flag=2;
	}while(flag);
	flag=0;
	int dot=0;
	do
	{
		header(1);
		cout<<"\t\t\t\t  SALES & INVOICE"<<endl;
		cout<<"\t\t\t\t  ---------------"<<endl<<endl;
		cout<<"\n";
		cout<<" >> INVOICE NUMBER : "<<::invoice<<"\t\t\t\t\t";
		cout<<"\n\n";
		cout<<"--------------------------------------------------------------------------------"<<endl;
		cout<<"SNO.\tBARCODE\t\tPRODUCT NAME\t\t\tRATE\tQTY\tPRICE"<<endl<<endl;
		cout<<"--------------------------------------------------------------------------------"<<endl;
		cout<<"\n";
		if(srl>1)
		{
			for(k=1;k<srl;++k)
			{
				cout<<k<<".";show_item(item[k],1);
				
			}

		}
		cout<<"--------------------------------------------------------------------------------"<<endl;
			cout<<"\t\t\t\t\t\t ";cout<<" >> TOTAL      : "<<total_bill<<" SR"<<endl;
		dot=0;
		cout<<"\n";
		if(flag==1)
		{	cout<<"\t\t\t\t     ";cout<<"!....INVALID DISCOUNT....!";}
		if(flag==2)
		{	cout<<"\t\t     ";cout<<"!....DISCOUNT SHOULD NOT EXCEED 7.5% OF TOTAL....!";}
		flag=0;
		cout<<"\n\n";
		if(total_bill<=100)
		{
			discount=0.00;
			cout<<"\t\t\t\t\t\t ";cout<<" >> DISCOUNT   : "<<discount<<" SR"<<endl;
		}
		else
		{
			cout<<"\t\t\t\t\t\t ";cout<<" >> DISCOUNT   : ";
			cin.getline(temp_dsc,10);
			if(!strcmp(temp_dsc,""))
			{
				discount=0.0;
				break;
			}
			for(k=0;temp_dsc[k]!='\0';++k)
			{
				if(isalpha(temp_dsc[k]))
				{
					flag=1;
					break;
				}
				if(!isdigit(temp_dsc[k])&&temp_dsc[k]!='.')
				{
					flag=1;
					break;
				}
				if(temp_dsc[k]=='.')
					++dot;
				if(dot>1)
				{
					flag=1;
					break;
				}
			}
		}
		if(atof(temp_dsc)>0.075*total_bill)
			flag=2;
	}while(flag);
	discount=atof(temp_dsc);
	net_total=total_bill-discount;
	flag=0;
	do
	{
		header(1);
		cout<<"\t\t\t\t  SALES & INVOICE"<<endl;
		cout<<"\t\t\t\t  ---------------"<<endl<<endl;
		cout<<"\n";
		cout<<" >> INVOICE NUMBER : "<<::invoice<<"\t\t\t\t\t";
		cout<<"\n\n";
		cout<<"--------------------------------------------------------------------------------"<<endl;
		cout<<"SNO.\tBARCODE\t\tPRODUCT NAME\t\t\tRATE\tQTY\tPRICE"<<endl<<endl;
		cout<<"--------------------------------------------------------------------------------"<<endl;
		cout<<"\n";
		if(srl>1)
		{
			for(k=1;k<srl;++k)
			{
				cout<<k<<".";show_item(item[k],1);
				
			}

		}
		cout<<"--------------------------------------------------------------------------------"<<endl;
		cout<<"\t\t\t\t\t\t ";cout<<" >> TOTAL      : "<<total_bill<<" SR"<<endl<<endl;
		cout<<"\t\t\t\t\t\t ";cout<<" >> DISCOUNT   : "<<discount<<" SR"<<endl<<endl;
		cout<<"\t\t\t\t\t\t ";cout<<" >> NET TOTAL  : "<<net_total<<" SR"<<endl<<endl;
		cout<<"\n";
		if(flag==1)
			cout<<"\t\t\t\t\t   !....INVALID AMOUNT....!";
		if(flag==2)
			cout<<"\t\t\t\t\t!....ENTER AMOUNT PAID....!";
		if(flag==3)
			cout<<"\t\t\t\t\t!....AMOUNT LESS THAN TOTAL....!";
		flag=0;dot=0;
		cout<<"\n\n";
		cout<<"\t\t\t\t\t\t ";cout<<" >> CASH       : ";
		cin.getline(temp_cash,10);
		if(!strcmp(temp_cash,""))
			flag=2;
		if(flag!=2)
		{
			for(k=0;temp_cash[k]!='\0';++k)
			{
				if(isalpha(temp_cash[k]))
				{
					flag=1;
					break;
				}
				if(!isdigit(temp_cash[k])&&temp_cash[k]!='.')
				{
					flag=1;
					break;
				}
				if(temp_cash[k]=='.')
					++dot;
				if(dot>1)
				{
					flag=1;
					break;
				}
			}
		}
		if(!flag)
		{
			if(atof(temp_cash)<net_total)
				flag=3;
		}
	}while(flag);
		header(1);
		cout<<"\t\t\t\t  SALES & INVOICE"<<endl;
		cout<<"\t\t\t\t  ---------------"<<endl<<endl;
		cout<<"\n";
		cout<<" >> INVOICE NUMBER : "<<::invoice<<"\t\t\t\t\t";
		cout<<"\n\n";
		cout<<"--------------------------------------------------------------------------------"<<endl;
		cout<<"SNO.\tBARCODE\t\tPRODUCT NAME\t\t\tRATE\tQTY\tPRICE"<<endl<<endl;
		cout<<"--------------------------------------------------------------------------------"<<endl;
		cout<<"\n";
		if(srl>1)
		{
			for(k=1;k<srl;++k)
			{
				cout<<k<<".";show_item(item[k],1);
				
			}

		}
		cout<<"--------------------------------------------------------------------------------"<<endl;
		cout<<"\t\t\t\t\t\t ";cout<<" >> TOTAL      : "<<total_bill<<" SR"<<endl<<endl;
		cout<<"\t\t\t\t\t\t ";cout<<" >> DISCOUNT   : "<<discount<<" SR"<<endl<<endl;
		cout<<"\t\t\t\t\t\t ";cout<<" >> NET TOTAL  : "<<net_total<<" SR"<<endl<<endl;
		cout<<"\t\t\t\t\t\t ";cout<<" >> CASH       : "<<temp_cash<<" SR"<<endl<<endl;
		cout<<"\t\t\t\t\t\t ";cout<<" >> CHANGE     : "<<atof(temp_cash)-net_total<<" SR"<<endl<<endl;
		cout<<"================================================================================"<<endl;
		cout<<"                 *** THANKS FOR SHOPPING WITH AMASI SUPERMARKET ***             "<<endl;
		cout<<"================================================================================"<<endl;
		cin.get();

}

void sales::show_item(item_list item,int s=1)
{
	if(s==1)
	{
		if(strlen(item.item_name)>=24)
			cout<<'\t'<<item.item_bc<<"\t\t"<<item.item_name<<"\t"<<item.item_rate<<" SR"<<'\t'<<item.qty<<'\t'<<item.tot_prc_item<<" SR"<<endl<<endl;
		else if(strlen(item.item_name)>=16)
			cout<<'\t'<<item.item_bc<<"\t\t"<<item.item_name<<"\t\t"<<item.item_rate<<" SR"<<'\t'<<item.qty<<'\t'<<item.tot_prc_item<<" SR"<<endl<<endl;
		else if(strlen(item.item_name)>=8)
			cout<<'\t'<<item.item_bc<<"\t\t"<<item.item_name<<"\t\t\t"<<item.item_rate<<" SR"<<'\t'<<item.qty<<'\t'<<item.tot_prc_item<<" SR"<<endl<<endl;
		else
			cout<<'\t'<<item.item_bc<<"\t\t"<<item.item_name<<"\t\t\t\t"<<item.item_rate<<" SR"<<'\t'<<item.qty<<'\t'<<item.tot_prc_item<<" SR"<<endl<<endl;
	}
	if(s==0)
	{
		if(strlen(item.item_name)>=24)
			cout<<'\t'<<item.item_bc<<"\t\t"<<item.item_name<<"\t"<<item.item_rate<<" SR"<<'\t';
		else if(strlen(item.item_name)>=16)
			cout<<'\t'<<item.item_bc<<"\t\t"<<item.item_name<<"\t\t"<<item.item_rate<<" SR"<<'\t';
		else if(strlen(item.item_name)>=8)
			cout<<'\t'<<item.item_bc<<"\t\t"<<item.item_name<<"\t\t\t"<<item.item_rate<<" SR"<<'\t';
		else
			cout<<'\t'<<item.item_bc<<"\t\t"<<item.item_name<<"\t\t\t\t"<<item.item_rate<<" SR"<<'\t';
	}

}

void main()
{
	//<||===========VARIABLE DECLARATIONS===========||>
	int i=0,total=0,flag=0,go=0,sno=1;
	char menuchoice[5],temp_user[20],temp_pwd[20],temp_sno[5];
	char temp[10];
	//<||===========VARIABLE DECLARATIONS OVER===========||>
	fstream fin;
	fstream dataread;
	fstream invoiceno;
	fstream getbillitems;
	fstream renew;
	fin.open("parental.txt",ios::in);					
	fin.getline(temp_user,20,'\n');						//
	fin.getline(temp_pwd,20,'\n');						//
	if(!strcmp(temp_user,"")&&!strcmp(temp_pwd,""))
	{
		strcpy(temp_user,"amasi");
		strcpy(temp_pwd,"amasi");
	}
	fin.close();										//   >> PARENTAL ACTIONS
	strcpy(::username,temp_user);						//
	strcpy(::password,temp_pwd);						//
	fstream serial;
	serial.open("serial.txt",ios::in);
	serial.getline(temp_sno,5);
	if(!strcmp(temp_sno,"")||!strcmp(temp_sno,"0"))
		strcpy(temp_sno,"1");
	serial.close();
	sno=atoi(temp_sno);
	dataread.open("dataitems.txt",ios::in);
	if(sno>1)
	{
		for(i=1;i<sno;++i)
		{
			dataread.getline(prod[i].barcode,20,'\n');
			dataread.getline(prod[i].prod_name,50,'\n');
			dataread.getline(temp,10,'\n');
			prod[i].price=atof(temp);
		}
	}
	dataread.close();
	invoiceno.open("invoice.txt",ios::in);
	invoiceno.getline(temp,10);
	invoiceno.close();
	if(!strcmp(temp,"")||!strcmp(temp,"0"))
		::invoice=1;
	else
		::invoice=atoi(temp);
	getbillitems.open("billitems.dat",ios::in|ios::binary);
	for(i=1;i<::invoice;++i)
	{
		getbillitems.read((char*)&sale[i],sizeof(sales));
	}
	getbillitems.close();
	header(0);
	//go=login(0);
	go=0;
	do
	{
		for(i=1;i<sno;++i)
			try_prod[i]=prod[i];
		renew.open("items.dat",ios::out|ios::binary);
		for(i=1;i<sno;++i)
		{
			renew.write((char*)&try_prod[i],sizeof(try_prod[i]));//truing to convert to binary file
		}

		renew.close();
		renew.open("items.dat",ios::in|ios::binary);
		for(i=1;i<sno;++i)
		{
			renew.read((char*)&try_prod[i],sizeof(try_prod[i]));//truing to convert to binary file
		}
		renew.close();
		do
		{
			menu();
			total=0;
			cout<<"\n";
			if(go==1)
				cout<<"!.....INVALID CHOICE.....!";
			if(go==2)
				cout<<"!.....PLEASE CREATE A DATA ENTRY BEFORE USING THIS OPTION.....!";
			if(go==4)
				cout<<"!.....NO SALES PERFORMED YET.....!";
			cout<<"\n\n";
			go=0;
			cout<<"Enter Your CHOICE : ";
			cin.getline(menuchoice,5);
		}while(!strcmp(menuchoice,""));
		for(i=0;menuchoice[i]!='\0';++i)
		{
			total+=menuchoice[i];
		}
		go=0;
		switch(total)
		{
		case 49:										//1. NEW PRODUCT
			sno=new_product_main(sno);
			break;
		case 50:										//2. EDIT PRODUCT
			if(sno==1)
			{
				go=2;
				break;
			}
			go=edit_product_main(sno);
			if(sno>1)
			{
				renew.open("dataitems.txt",ios::out);
				for(i=1;i<sno;++i)
				{
					renew<<prod[i].barcode<<'\n'<<prod[i].prod_name<<'\n'<<prod[i].price<<"\n";
				}
				renew.close();
			}
			if(sno==1)
			{
				renew.open("dataitems.txt",ios::out);
				renew.close();
			}
			break;
		case 51:										//3. ALL PRODUCT DATA
			if(sno==1)
			{
				go=2;
				break;
			}
			all_product_main(sno);
			break;
		case 52:										//4. SEARCH DATA
			if(sno==1)
			{
				go=2;
				break;
			}
			go=search_product_main(sno);
			renew.open("dataitems.txt",ios::out);
			for(i=1;i<sno;++i)
			{
				renew<<prod[i].barcode<<'\n'<<prod[i].prod_name<<'\n'<<prod[i].price<<"\n";
			}
			renew.close();
			break;
		case 53:										//5. DELETE DATA
			int temp;
			if(sno==1)
			{
				go=2;
				break;
			}
			temp=delete_product_main(sno);
			if(!temp)
			{
				go=3;
			}
			else
			{
				if(sno!=1)
					--sno;
			}
			if(sno>1)
			{
				renew.open("dataitems.txt",ios::out);
				for(i=1;i<sno;++i)
				{
					renew<<prod[i].barcode<<'\n'<<prod[i].prod_name<<'\n'<<prod[i].price<<"\n";
				}
				renew.close();
			}
			if(sno==1)
			{
				renew.open("dataitems.txt",ios::out);
				renew.close();
			}
			break;
		case 54:										//6. INVOICE & SALES
			if(sno==1)
			{
				go=2;
				break;
			}
			go=billing_main(sno);
			break;
		case 55:										//7. SALES HISTORY
			if(::invoice==1)
			{
				go=4;
				break;
			}
			sales_history();
			break;
		case 56:										//8. CHANGE USERNAME AND PASSWORD
			go=admin_ctrl(sno);
			break;
		case 57:										//10. LOG OFF 
			menu();
			cout<<"\n\n\n";
			cout<<"LOGGING OFF..."<<endl;
			for(i=0;i<=1000000000;i++);
			logged_off();
			cin.ignore();
			go=login(1);
			break;
		case 97:										//11. EXIT
			menu();
			cout<<"\n\n\n";
			cout<<"LOGGING OFF..."<<endl;
			for(i=0;i<=1000000000;i++);
			footer();
			break;
		default:
			go=1;
			break;
		}
		if(total!=97&&go==0&&go!=3)						//go=3 ---->> GO BACK TO MAIN MENU
		{
			cout<<"Hit ENTER To Continue .. ";
			if(cin.get()||!cin.get()){}
		}
	}while(go||!go);
}

void header(int s)
{
	system("title AMASI");
	system("cls");
	cout<<"\n\n";
	cout<<"\t\t\t  WELCOME TO SUPERMARKET DATABASE"<<endl;
	cout<<"\t\t\t *********************************"<<endl;
	if(s==1)
	{
		cout<<"\n";
		cout<<"\t\t\t     ======================="<<endl;
		cout<<"\t\t\t     || AMASI SUPERMARKET ||"<<endl;
		cout<<"\t\t\t     ======================="<<endl;
		cout<<"\n\n";
		showtime();										//DISPLAYS CURRENT DATE AND TIME
	}
}
void showtime()
{
	time_t t1 = time(0);   // get time now
	struct tm * now = localtime( & t1 );
	if(now->tm_hour<10)cout<<"0";
	cout << now->tm_hour << ":";
	if(now->tm_min<10)cout<<"0";
	cout<< now->tm_min << ":";
	if(now->tm_sec<10)cout<<"0";
	cout<< now->tm_sec;
	cout<<"\t\t\t\t\t\t\t     ";
	if(now->tm_mday<10)cout<<"0";
	cout <<  now->tm_mday << '-';
	if((now->tm_mon+1)<10)cout<<"0";
	cout << (now->tm_mon + 1) << '-'
		 << (now->tm_year + 1900) <<endl;
	cout<<"  ";
}

int login(int t)
{
	int flag=1,i=0;
	char usrnme[20],pwd[20];
	do
	{
		do{
			header(1);
			cout<<"\t\t\t!====AUNTHETICATION REQUIRED====!"<<endl;
			cout<<"\t\t\t---------------------------------"<<endl;
			if(t==0||t==1)
			cout<<"\t\t\t      >> TO EXIT HIT \'0\' <<"<<endl<<endl<<endl;
			else
			cout<<"\t\t\t    >> TO GO BACK HIT \'0\' <<"<<endl<<endl<<endl;
			if(flag)
				cout<<endl<<endl;
			if(!flag)											// ERROR MSG
			{
				cout<<"\t\t!!!!=====USERNAME & PASSWORD DOES NOT MATCH=====!!!!"<<endl<<endl;
			}
			cout<<" >> USERNAME             :       ";
			cin.getline(usrnme,20);
		}while(!strcmp(usrnme,""));
		if(!strcmp(usrnme,"0"))
		{										// TO EXIT
			if(t!=0&&t!=1)
				return 3;
			footer();
			break;
		}
		do
		{
			header(1);
			cout<<"\t\t\t!====AUNTHETICATION REQUIRED====!"<<endl;
			cout<<"\t\t\t---------------------------------"<<endl;
			if(t==0||t==1)
			cout<<"\t\t\t      >> TO EXIT HIT \'0\' <<"<<endl<<endl<<endl;
			else
			cout<<"\t\t\t    >> TO GO BACK HIT \'0\' <<"<<endl<<endl<<endl;
			if(flag)
				cout<<endl<<endl;
			cout<<" >> USERNAME             :       "<<usrnme;
			cout<<endl<<endl;
			cout<<" >> PASSWORD             :       ";
			cin.getline(pwd,20);
		}while(!strcmp(pwd,""));
		if(!strcmp(pwd,"0"))
		{										// TO EXIT
			if(t!=0&&t!=1)
				return 3;
			footer();
			break;
		}
		if(!strcmp(usrnme,::username)&&!strcmp(pwd,::password))
			flag=1;											// LOGIN SUCCESSFUL !!!
		else
			flag=0;											// LOGIN UNSUCCESSFUL !!!
	}while(!flag);
	header(1);
	cout<<"\t\t\t!!!!=====LOGIN SUCCESSFUL=====!!!!";
	if(t==0)
	{
		cout<<"\n\n PLEASE WAIT......"<<endl;
		for(i=0;i<=1000000000;i++);
		cout<<"\n >> MEMORY ALLOTMENT.............COMPLETED!!"<<endl;
		for(i=0;i<=1000000000;i++);
		cout<<"\n >> DATABASE INITIALIZATION......COMPLETED!!"<<endl;
		for(i=0;i<=1000000000;i++);
		cout<<"\n >> LOADING COMPLETE !!"<<endl;
		cout<<"\n\t\t     =======================================";
		cout<<"\n\t\t     ||      >> MAXIMISE THE WINDOW <<    ||";
		cout<<"\n\t\t     =======================================";
		cout<<"\n\n";
		cout<<"Hit ENTER To Continue .. ";
		if(cin.get()||!cin.get()){return 0;}
	}
	else if(t==1)
	{
		cout<<"\n\n\n >> STARTING FROM WHERE YOU LEFT OFF !!..."<<endl;
		for(i=0;i<=1000000000;i++);
	}
	else
	{		
		cout<<"\n\n\n >> AUTHENTICATING..."<<endl;
		for(i=0;i<=1000000000;i++);
	}
	cout<<endl<<endl;
}

char convert(char check[])
{
	int i=0;
	for(i=0;check[i]!='\0';++i)
		if(isalpha(check[i]))
			check[i]=toupper(check[i]);
	return check[20];
}

int new_product_main(int sno)
{
	int i=0,go=0,times=1;
	fstream serial;
	fstream data;
	if(sno==1)
	{
		data.open("dataitems.txt",ios::out);
		data.close();
	}
	data.open("dataitems.txt",ios::app);
	for(i=sno;i<=100;i++)
	{
		go=prod[i].enter_data(i,times);
		serial.open("serial.txt",ios::out);
		serial<<i<<endl;
		serial.close();
		++times;
		if(!go)
			break;
		data<<prod[i].barcode<<'\n'<<prod[i].prod_name<<'\n'<<prod[i].price<<"\n";
	}
	data.close();
	header(1);
	cout<<"\t\t\t\tNEW PRODUCT ENTRY"<<endl;
	cout<<"\t\t\t\t-----------------"<<endl<<endl;
	cout<<"\n\n";
	cout<<"--------------------------------------------------------------------------------"<<endl;
	cout<<"SNO.\tBARCODE\t\t\tPRODUCT NAME\t\t\tPRICE"<<endl<<endl;
	cout<<"--------------------------------------------------------------------------------"<<endl;
	cout<<"\n\n";
	return i;
}

void all_product_main(int sno)
{
	int i=0;
	header(1);
	cout<<"\t\t\t\tALL PRODUCT ENTRIES"<<endl;
	cout<<"\t\t\t\t-------------------"<<endl<<endl;
	cout<<"\n\n";
	cout<<"================================================================================"<<endl;
	cout<<"SNO.\tBARCODE\t\t\tPRODUCT NAME\t\t\tPRICE"<<endl<<endl;
	cout<<"================================================================================"<<endl;	
	for(i=1;i<sno;++i)
	{
		cout<<i<<".";
		prod[i].show_data();
		cout<<endl<<endl;
		cout<<"--------------------------------------------------------------------------------"<<endl;	
		if(i==65)
		{
			cout<<"\nHit ENTER To VIEW MORE...";
			cin.get();
			header(1);
			cout<<"\t\t\t\tALL PRODUCT ENTRIES"<<endl;
			cout<<"\t\t\t\t-------------------"<<endl<<endl;
			cout<<"\n\n";
			cout<<"================================================================================"<<endl;
			cout<<"SNO.\tBARCODE\t\t\tPRODUCT NAME\t\t\tPRICE"<<endl<<endl;
			cout<<"================================================================================"<<endl;	
		}
	}
}

int search_product_main(int &sno)
{
	int i=0,j=0,flag=0,go=0,size=0;
	char choice[5],prod_name[50],barcode[20],temp[20]="";
SEARCH_MENU:
	do
	{
		header(1);
		cout<<"\t\t\t\tSEARCH PRODUCT DATA"<<endl;
		cout<<"\t\t\t\t-------------------"<<endl<<endl;
		cout<<"\n";
		cout<<" >> 1. SEARCH BY BARCODE "<<endl;
		cout<<"\n";
		cout<<" >> 2. SEARCH BY PRODUCT NAME "<<endl;
		cout<<"\n";
		cout<<" >> 3. GO BACK TO MAIN MENU "<<endl;
		cout<<"\n";
		if(flag==2)
			cout<<"    !.....INVALID CHOICE.....!";
		cout<<"\n\n";
		flag=0;
		cout<<"    Enter Your CHOICE : ";
		cin.getline(choice,5);
		if(!strcmp(choice,""))
			flag=1;
		if((strcmp(choice,"1")&&strcmp(choice,"2")&&strcmp(choice,"3"))&&flag!=1)
			flag=2;
	}while(flag);
	if(!strcmp(choice,"1"))								//SEARCH BY BARCODE
	{
SEARCH_BC:
		do
		{
			strcpy(temp,barcode);						//IN CASE IF USER SAY TO ADD.....
			header(1);
			cout<<"\t\t\t\tSEARCH PRODUCT DATA"<<endl;
			cout<<"\t\t\t\t-------------------"<<endl<<endl;
			cout<<"\n";
			cout<<" >>    SEARCH BY BARCODE "<<endl;
			cout<<"       -------------------";
			cout<<"\n\n";
			if(!flag||flag==1)
				cout<<"\t\t\t\t\t\t\t  HIT \'0\' TO GO BACK <<";
			if(flag==2)
				cout<<"       !.....|| BARCODE NOT FOUND ||.....!\t    HIT \'N\' TO ADD THIS ITEM <<";
			cout<<"\n\n";
			cout<<"       Enter The ITEM BARCODE : ";
			cin.getline(barcode,20);
			barcode[20]=convert(barcode);
			if(flag==2)
			{
				if(!strcmpi(barcode,"N"))
				{
					go=prod[sno].enter_data(sno,temp);
					if(go!=0)
						++sno;
					flag=0;
					goto SEARCH_BC;
				}
			}
			flag=0;
			if(!strcmp(barcode,""))
				flag=1;
			if(!strcmp(barcode,"0"))					//GO BACK TO PREVIOUS MENU
				break;
			if(flag!=1)
			{
				for(i=1;i<sno;++i)
				{
					if(!strcmp(barcode,prod[i].barcode))
					{
						flag=0;							//BARCODE FOUND
						break;
					}
					else
						flag=2;							//BARCODE NT FOUND
				}
			}
		}while(flag);
		if(!strcmp(barcode,"0"))
			goto SEARCH_MENU;
		if(flag==0)
		{
			header(1);
			cout<<"\t\t\t\tSEARCH PRODUCT DATA"<<endl;
			cout<<"\t\t\t\t-------------------"<<endl<<endl;
			cout<<"\n";
			cout<<" >>    SEARCH RESULTS "<<endl;
			cout<<"       ---------------";
			cout<<"\n\n";
			cout<<"================================================================================"<<endl;
			cout<<"SNO.\tBARCODE\t\t\tPRODUCT NAME\t\t\tPRICE"<<endl<<endl;
			cout<<"================================================================================"<<endl;	
			cout<<i<<".";
			prod[i].show_data();
			cout<<endl<<endl;
			cout<<"--------------------------------------------------------------------------------"<<endl;
		}
	}
SEARCH_NAME:
	if(!strcmp(choice,"2"))								//SEARCH BY PRODUCT NAME
	{
		struct get_word
		{
			char wrd[50];
		}words[50];
		for(int l=0;l<50;++l)
		{
			strcpy(words[l].wrd,"");
		}
		struct prod_word
		{
			char prod_wrd[50];
			int bc;
		}prod_words[15000];
		for(l=0;l<15000;++l)
		{
			strcpy(prod_words[l].prod_wrd,"");
			prod_words[l].bc=0;
		}
		char mainword[50];
		char query_word[50];
		strcpy(mainword,"");
		strcpy(query_word,"");
		int i=0 , nwrd_query=0 , nwrd_prod=0 , bc_fnd[25] , size=0 , j=0 , k=0, flag=0;
		do
		{
			header(1);
			cout<<"\t\t\t\tSEARCH PRODUCT DATA"<<endl;
			cout<<"\t\t\t\t-------------------"<<endl<<endl;
			cout<<"\n";
			cout<<" >>    SEARCH BY PRODUCT NAME "<<endl;
			cout<<"       -----------------------";
			cout<<"\n\n";
			if(!flag||flag==1)
				cout<<"\t\t\t\t\t\t\t  HIT \'0\' TO GO BACK <<";
			if(flag==2)
				cout<<"       !.....|| ITEM NOT FOUND ||.....!\t\t\t  HIT \'0\' TO GO BACK <<";
			flag=0;
			cout<<"\n\n";
			cout<<"       Enter The ITEM NAME : ";
			cin.getline(query_word,50);
			if(!strcmp(query_word,""))
				flag=1;
			if(!strcmp(query_word,"0"))					//GO BACK TO PREVIOUS MENU
				break;
			if(flag!=1)
			{
				break;
			}
		}while(flag);
		if(!strcmp(query_word,"0"))
			goto SEARCH_MENU;
		if(flag!=1)
		{
			strcpy(mainword,query_word);
			for(i=0;query_word[i]!='\0';++i)
			{
				if(query_word[i]!=' ')
				{
					words[nwrd_query].wrd[j]=query_word[i];
					++j;
				}
				if(query_word[i]==' '||query_word[i+1]=='\0')
				{
					words[nwrd_query].wrd[j]='\0';
					++nwrd_query;
					j=0;
				}
			}
			for(i=1;i<sno;++i)
			{
				if(!strcmpi(mainword,prod[i].prod_name))
				{
					bc_fnd[size++]=i;
					break;
				}
			}
			int flag=0;
			for(i=1;i<sno;++i)
			{
				for(j=0;prod[i].prod_name[j]!='\0';++j)
				{
					if(prod[i].prod_name[j]!=' ')
					{
						prod_words[nwrd_prod].prod_wrd[k]=prod[i].prod_name[j];
						++k;
					}
					if(prod[i].prod_name[j]==' '||prod[i].prod_name[j+1]=='\0')
					{
						prod_words[nwrd_prod].prod_wrd[k]='\0';
						prod_words[nwrd_prod].bc=i;
						nwrd_prod++;
						k=0;
					}
				}
				for(int h=0;h<nwrd_query;++h)
				{
					for(int o=0;o<nwrd_prod;++o)
					{
						if(!strcmpi(words[h].wrd,prod_words[o].prod_wrd))
						{
							for(int n=0;n<size;++n)
							{
								if(bc_fnd[n]==prod_words[o].bc)
								{
									flag=1;
								
								}
							}
							if(flag!=1)
							{
								bc_fnd[size]=prod_words[o].bc;
								size=size+1;
								flag=0;
							
							}
						}
					}
				}
			}
			nwrd_prod=0;
		}
		if(flag==0)
		{
			header(1);
			cout<<"\t\t\t\tSEARCH PRODUCT DATA"<<endl;
			cout<<"\t\t\t\t-------------------"<<endl<<endl;
			cout<<"\n";
			cout<<" >>    SEARCH RESULTS "<<endl;
			cout<<"       ---------------";
			cout<<"\n\n";
			cout<<"================================================================================"<<endl;
			cout<<"SNO.\tBARCODE\t\t\tPRODUCT NAME\t\t\tPRICE"<<endl<<endl;
			cout<<"================================================================================"<<endl;	
			for(int g=1;g<sno;++g)
			{
				for(int f=0;f<size;++f)
				{
					if(g==bc_fnd[f])
					{
						prod[g].show_data();
						cout<<endl<<endl;
						cout<<"--------------------------------------------------------------------------------"<<endl;
					}
				}
			}
		}
	}
	if(!strcmp(choice,"3"))
		return 3;
	else
		return 0;
}

int delete_product_main(int sno)
{
	int flag=0,i=0,j=0;
	char del_barcode[20],choice[5];
FIND_DEL_BC:
	flag=0;
	do
	{
		header(1);
		cout<<"\t\t\t\tDELETE PRODUCT DATA"<<endl;
		cout<<"\t\t\t\t-------------------"<<endl<<endl;
		cout<<"\n";
		cout<<"    >> FIND PRODUCT \t\t   >> CONFIRM \t\t >> DELETE PRODUCT"<<endl;
		cout<<"       -------------"<<endl;
		cout<<"\n";
		if(!flag||flag==1)
			cout<<"\t\t\t\t\t\t\t  HIT \'0\' TO GO BACK <<";
		if(flag==2)
			cout<<"       !.....|| BARCODE NOT FOUND ||.....!\t\t  HIT \'0\' TO GO BACK <<";
		flag=0;
		cout<<"\n\n";
		cout<<"       Enter The ITEM BARCODE : ";
		cin.getline(del_barcode,20);
		del_barcode[20]=convert(del_barcode);
		if(!strcmp(del_barcode,""))
			flag=1;
		if(!strcmp(del_barcode,"0"))
			return 0;
		if(flag!=1)
		{
			for(i=1;i<sno;++i)
			{
				if(!strcmp(prod[i].barcode,del_barcode))
				{
					flag=0;
					break;
				}
				else
					flag=2;
			}
		}
	}while(flag);
	flag=0;
	do
	{
		header(1);
		cout<<"\t\t\t\tDELETE PRODUCT DATA"<<endl;
		cout<<"\t\t\t\t-------------------"<<endl<<endl;
		cout<<"\n";
		cout<<"    >> FIND PRODUCT \t\t   >> CONFIRM \t\t >> DELETE PRODUCT"<<endl;
		cout<<"\t\t\t\t      --------"<<endl;
		cout<<"\n\n";
		cout<<"       !!....PRODUCT FOUND....!!";
		cout<<"\n\n";
		cout<<"--------------------------------------------------------------------------------"<<endl;
		cout<<"SNO.\tBARCODE\t\t\tPRODUCT NAME\t\t\tPRICE"<<endl<<endl;
		cout<<"--------------------------------------------------------------------------------"<<endl;
		prod[i].show_data();
		cout<<endl<<endl;
		cout<<"--------------------------------------------------------------------------------"<<endl<<endl<<endl;
		cout<<"       Are You Sure You Want To DELETE This Product ?     >> Y : YES"<<endl<<endl;
		cout<<"                                                          >> N : NO"<<endl<<endl;
		cout<<"                                                          >> C : CHANGE PRODUCT"<<endl;
		cout<<"\n";
		if(flag==1)
			cout<<"                                     !.....ENTER Y / N / C.....!";
		if(flag==2)
			cout<<"                                      !.....INVALID CHOICE.....!";
		cout<<"\n\n";
		flag=0;
		cout<<"                                             Enter Your CHOICE : ";
		cin.getline(choice,5);		
		if(!strcmp(choice,""))
			flag=1;
		if(flag!=1)
			if(strcmpi(choice,"Y")&&strcmpi(choice,"N")&&strcmpi(choice,"C"))
				flag=2;
	}while(flag);
	if(!strcmpi(choice,"C"))											// --- >> "CHANGE PRODUCT"
		goto FIND_DEL_BC;
	if(!strcmpi(choice,"N"))											// --- >> "NO"
	{
		header(1);
		cout<<"\t\t\t\tDELETE PRODUCT DATA"<<endl;
		cout<<"\t\t\t\t-------------------"<<endl<<endl;
		cout<<"\n";
		cout<<"    >> FIND PRODUCT \t\t   >> CONFIRM \t\t >> DELETE PRODUCT"<<endl;
		cout<<"\t\t\t\t      --------"<<endl;
		cout<<"\n\n\n";
		cout<<"\t\t\t!.....|| PRODUCT NOT DELETED ||.....!"<<endl;
		cout<<"\t\t\t-------------------------------------"<<endl<<endl;
		return 0;
	}
	else																// --- >> "YES"
	{
		char news[150]="ITEM DELETED : ";
		header(1);
		cout<<"\t\t\t\tDELETE PRODUCT DATA"<<endl;
		cout<<"\t\t\t\t-------------------"<<endl<<endl;
		cout<<"\n";
		cout<<"    >> FIND PRODUCT \t\t   >> CONFIRM \t\t >> DELETE PRODUCT"<<endl;
		cout<<"\t\t\t\t\t\t\t    ---------------"<<endl;
		cout<<"\n";
		cout<<"\n";
		cout<<"\n\t\t\t\t     DELETING...."<<endl;
		for(j=0;j<=700000000;j++);
		header(1);
		cout<<"\t\t\t\tDELETE PRODUCT DATA"<<endl;
		cout<<"\t\t\t\t-------------------"<<endl<<endl;
		cout<<"\n";
		cout<<"    >> FIND PRODUCT \t\t   >> CONFIRM \t\t >> DELETE PRODUCT"<<endl;
		cout<<"\t\t\t\t\t\t\t    ---------------"<<endl;
		cout<<"\n\n\n";
		for(j=i;j<=sno;++j)
		{
			prod[j]=prod[j+1];
		}
		cout<<"\t\t\t!.....|| PRODUCT DELETED ||.....!"<<endl;
		cout<<"\t\t\t---------------------------------"<<endl<<endl;\
		fstream serial;
		serial.open("serial.txt",ios::out);
		serial<<sno-1<<endl;
		serial.close();
		return --sno;
	}
}

int edit_product_main(int &sno)
{
	int flag=0,i=0,temp=0,go=0;
	char choice[5],init_barcode[20],temp_bc[20]="";
FIND_EDIT_BC:
	do
	{
		strcpy(temp_bc,init_barcode);
		header(1);
		cout<<"\t\t\t\tEDIT PRODUCT ENTRY"<<endl;
		cout<<"\t\t\t\t------------------"<<endl<<endl;
		cout<<"\n";
		cout<<"   >> FIND PRODUCT      >> SELECT FIELD      >> EDIT FIELD      >> CONFIRM"<<endl;
		cout<<"      -------------"<<endl;
		cout<<"\n";
		if(!flag||flag==1)
			cout<<"\t\t\t\t\t\t\t  HIT \'0\' TO GO BACK <<";
		if(flag==2)
			cout<<"       !.....|| BARCODE NOT FOUND ||.....!\t    HIT \'N\' TO ADD THIS ITEM <<";
		cout<<"\n\n";
		cout<<"       Enter The ITEM BARCODE : ";
		cin.getline(init_barcode,20);
		init_barcode[20]=convert(init_barcode);
		if(flag==2)
		{
			if(!strcmpi(init_barcode,"N"))
			{
				go=prod[sno].enter_data(sno,temp_bc);
				if(go!=0)
					++sno;
				flag=0;
				goto FIND_EDIT_BC;
			}
		}
		flag=0;
		if(!strcmp(init_barcode,""))
			flag=1;
		if(!strcmp(init_barcode,"0"))
			return 3;											//GO BACK TO MAIN MENU
		if(flag!=1)
		{
			for(i=1;i<sno;++i)
			{
				if(!strcmpi(prod[i].barcode,init_barcode))
				{
					flag=0;
					break;
				}
				else
					flag=2;
			}
		}
	}while(flag);
	flag=0;
EDIT_RESULTS:
	do
	{
		header(1);
		cout<<"\t\t\t\tEDIT PRODUCT ENTRY"<<endl;
		cout<<"\t\t\t\t------------------"<<endl<<endl;
		cout<<"\n";
		cout<<"   >> FIND PRODUCT      >> SELECT FIELD      >> EDIT FIELD      >> CONFIRM"<<endl;
		cout<<"                           -------------"<<endl;
		cout<<"\n\n";
		cout<<"       !!....PRODUCT FOUND....!!";
		cout<<"\n\n";
		cout<<"--------------------------------------------------------------------------------"<<endl;
		cout<<"SNO.\tBARCODE\t\t\tPRODUCT NAME\t\t\tPRICE"<<endl<<endl;
		cout<<"--------------------------------------------------------------------------------"<<endl;
		prod[i].show_data();
		cout<<endl<<endl;
		cout<<"--------------------------------------------------------------------------------"<<endl<<endl<<endl;
		cout<<"          Choose The FIELD To EDIT      >>    B : BARCODE"<<endl<<endl;
		cout<<"                                        >>    N : PRODUCT NAME"<<endl<<endl;
		cout<<"                                        >>    P : PRODUCT PRICE"<<endl<<endl;
		cout<<"                                        >>    C : CHANGE PRODUCT"<<endl<<endl;
		cout<<"                                        >>    G : MAIN MENU"<<endl;
		cout<<"\n";
		if(flag==1)
			cout<<"                 !.....ENTER A VALID CHOICE.....!";
		if(flag==2)
			cout<<"                       !.....INVALID CHOICE.....!";
		cout<<"\n\n";
		flag=0;
		cout<<"                              Enter Your CHOICE : ";
		cin.getline(choice,5);		
		if(!strcmp(choice,""))
			flag=1;
		if(flag!=1)
			if(strcmpi(choice,"B")&&strcmpi(choice,"N")&&strcmpi(choice,"P")&&strcmpi(choice,"C")&&strcmpi(choice,"G"))
				flag=2;
	}while(flag);
	if(!strcmpi(choice,"C"))
		goto FIND_EDIT_BC;
	if(!strcmpi(choice,"G"))
		return 3;
	if(!strcmpi(choice,"B"))
	{
		temp=prod[i].edit_data("barcode",sno,i);
		if(!temp)
			goto EDIT_RESULTS;
	}
	if(!strcmpi(choice,"N"))
	{
		temp=prod[i].edit_data("product",sno,i);
		if(!temp)
			goto EDIT_RESULTS;
	}
	if(!strcmpi(choice,"P"))
	{
		temp=prod[i].edit_data("price",sno,i);
		if(!temp)
			goto EDIT_RESULTS;
	}
	return 0;
}

int parental_ctrl()
{
	char new_user[20],new_pwd[20],confirm_pwd[20],choice[5],curr_pwd[20]="";
	int flag=0;
ENTER_USER:
	do
	{
		if(!strcmp(curr_pwd,""))
		{
			do
			{
				header(1);
				cout<<"\t\t\t    USERNAME & PASSWORD CHANGE"<<endl;
				cout<<"\t\t\t    --------------------------"<<endl;
				cout<<endl<<endl;
				cout<<"\n";
				if(!flag)
				{
					cout<<"\t\t\t\t\t\t\t  HIT \'0\' TO GO BACK <<";
				}
				if(flag==1)
				{
					cout<<"  !!=====ENTER YOUR CURRENT PASSWORD=====!!\t\t  HIT \'0\' TO GO BACK <<";
				}
				if(flag==2)
				{
					cout<<"  !!=====INVALID CURRENT PASSWORD=====!!\t\t  HIT \'0\' TO GO BACK <<";
				}
				cout<<"\n\n";
				cout<<" >> CURRENT PASSWORD      :           ";
				cin.getline(curr_pwd,20);
				if(!strcmp(curr_pwd,::password))
					break;
				if(strcmp(curr_pwd,::password))
					flag=2;
				if(!strcmp(curr_pwd,""))
					flag=1;
				if(!strcmp(curr_pwd,"0"))
					break;
			}while(strcmp(curr_pwd,::password));
				if(!strcmp(curr_pwd,"0"))
					return 3;
			flag=0;
		}
		if(flag!=4)														//IF PWD AND CONFIRM DONT MATCH
		{
			header(1);
			cout<<"\t\t\t    USERNAME & PASSWORD CHANGE"<<endl;
			cout<<"\t\t\t    --------------------------"<<endl;
			cout<<endl<<endl;
			cout<<"\n";
		}
		if(!flag)
		{
			cout<<"\t\t\t\t\t\t\t  HIT \'0\' TO GO BACK <<";
		}
		if(flag==1)
		{
			cout<<"  !!=====USERNAME FIELD IS MANDATORY=====!!\t\t  HIT \'0\' TO GO BACK <<";
		}
		if(flag==4)
		{
			cout<<"  !!=====PASSWORDS DO NOT MATCH=====!!      \t\t  HIT \'0\' TO GO BACK <<";
		}
		flag=0;
		cout<<"\n\n";
		cout<<" >> NEW USERNAME          :           ";
		cin.getline(new_user,20);
		if(!strcmp(new_user,"0"))
			return 3;
		if(!strcmp(new_user,""))
			flag=1;													//flag=1 >> USERNAME BLANK		
		if(flag!=1)
		{
			do
			{
				header(1);
				cout<<"\t\t\t    USERNAME & PASSWORD CHANGE"<<endl;
				cout<<"\t\t\t    --------------------------"<<endl;
				cout<<endl<<endl;
				cout<<"\n";
				if(!flag)
				{
					cout<<"\t\t\t\t\t\t\t  HIT \'0\' TO GO BACK <<";
				}
				if(flag==2)
				{
					cout<<"  !!=====PASSWORD FIELD IS MANDATORY=====!!\t\t  HIT \'0\' TO GO BACK <<";
				}
				flag=0;
				cout<<"\n\n";
				cout<<" >> NEW USERNAME          :           "<<new_user;
				cout<<"\n\n";
				cout<<" >> NEW PASSWORD          :           ";			
				cin.getline(new_pwd,20);
				if(!strcmp(new_pwd,"0"))
					goto ENTER_USER;
				if(!strcmp(new_pwd,""))
					flag=2;												//flag=2 >> PWD BLANK
				if(flag!=2)
				{
					do
					{
						header(1);
						cout<<"\t\t\t    USERNAME & PASSWORD CHANGE"<<endl;
						cout<<"\t\t\t    --------------------------"<<endl;
						cout<<endl<<endl;
						cout<<"\n";
						if(flag==3)
						{
							cout<<"  !!=====RE-ENTER THE PASSWORD=====!!";
						}
						if(flag==4)
						{
							goto ENTER_USER;
						}
						flag=0;
						cout<<"\n\n";
						cout<<" >> NEW USERNAME          :           "<<new_user;
						cout<<"\n\n";
						cout<<" >> CONFIRM PASSWORD      :           ";
						cin.getline(confirm_pwd,20);
						if(!strcmp(confirm_pwd,""))
							flag=3;	
						if(flag!=3)
							if(strcmp(new_pwd,confirm_pwd))
								flag=4;
					}while(flag);
				}
			}while(flag);
		}
	}while(flag);
	flag=0;
	do
	{
		header(1);
		cout<<"\t\t\t    USERNAME & PASSWORD CHANGE"<<endl;
		cout<<"\t\t\t    --------------------------"<<endl;
		cout<<endl<<endl;
		cout<<"\n";
		cout<<"\n\n";
		cout<<"    ARE YOU SURE TO CHANGE THE USERNAME & PASSWORD OF THE DATABASE ?"<<endl<<endl;
		cout<<"                                                      >>  Y : YES"<<endl<<endl;
		cout<<"                                                      >>  N : NO"<<endl;
		cout<<"\n";
		if(flag==1)
			cout<<"                                      !.....ENTER Y / N.....!";
		if(flag==2)
			cout<<"                                   !.....INVALID CHOICE.....!";
		flag=0;
		cout<<"\n\n";
		cout<<"                                          Enter Your CHOICE : ";
		cin.getline(choice,5);
		if(!strcmp(choice,""))
			flag=1;
		if(flag!=1)
			if(strcmpi(choice,"Y")&&strcmpi(choice,"N"))
				flag=2;
	}while(flag);
	if(!strcmpi(choice,"N"))
	{
		header(1);
		cout<<"\t\t\t    USERNAME & PASSWORD CHANGE"<<endl;
		cout<<"\t\t\t    --------------------------"<<endl;
		cout<<endl<<endl;
		cout<<"\n";
		cout<<"\n\n";
		cout<<"--------------------------------------------------------------------------------"<<endl;
		cout<<"                !.....|| USERNAME & PASSWORD NOT CHANGED ||.....!"<<endl;             
		cout<<"--------------------------------------------------------------------------------"<<endl;
		return 0;
	}
	if(!strcmpi(choice,"Y"))
	{
		header(1);
		cout<<"\t\t\t    USERNAME & PASSWORD CHANGE"<<endl;
		cout<<"\t\t\t    --------------------------"<<endl;
		cout<<endl<<endl;
		cout<<"\n";
		cout<<"\n\n";
		cout<<"--------------------------------------------------------------------------------"<<endl;
		cout<<"		        CHANGING USERNAME & PASSWORD......"<<endl;
		cout<<"--------------------------------------------------------------------------------"<<endl;
		for(int i=0;i<=700000000;i++);
		header(1);
		cout<<"\t\t\t    USERNAME & PASSWORD CHANGE"<<endl;
		cout<<"\t\t\t    --------------------------"<<endl;
		cout<<endl<<endl;
		cout<<"\n";
		cout<<"\n\n";
		fstream fout;
		fout.open("parental.txt",ios::out);
		fout<<new_user<<'\n'<<new_pwd;
		fout.close();
		strcpy(::username,new_user);
		strcpy(::password,new_pwd);
		cout<<"--------------------------------------------------------------------------------"<<endl;
		cout<<"                 !.....|| USERNAME & PASSWORD CHANGED ||.....!"<<endl;             
		cout<<"--------------------------------------------------------------------------------"<<endl;
		return 0;
	}
	return 0;
}


int billing_main(int sno)
{
	int i=0,go=0,times=1;
	fstream enter;
	fstream billdata;
	if(::invoice==1)
	{
		billdata.open("billdata.txt",ios::out);
		billdata.close();
	}
	billdata.open("billdata.txt",ios::app);
	for(i=::invoice;;)
	{
		go=sale[i].new_bill(sno);
		++times;
		if(!go)
			break;
		billdata<<sale[i].total_bill<<"\n"<<sale[i].discount<<"\n"<<sale[i].net_total<<"\n";
		fstream ritebill;
		if(::invoice==1)
			ritebill.open("billitems.dat",ios::out|ios::binary);
		else
			ritebill.open("billitems.dat",ios::app|ios::binary);
		ritebill.write((char*)&sale[i],sizeof(sale[i]));
		ritebill.close();
		i=++::invoice;

	}
	billdata.close();
	enter.open("invoice.txt",ios::out);
	enter<<::invoice;
	enter.close();
	header(1);
	cout<<"\t\t\t\t  SALES & INVOICE"<<endl;
	cout<<"\t\t\t\t  ---------------"<<endl<<endl;
	cout<<"\n";
	cout<<" >> INVOICE NUMBER : "<<::invoice;
	cout<<"\n\n";
	cout<<"--------------------------------------------------------------------------------"<<endl;
	cout<<"SNO.\tBARCODE\t\tPRODUCT NAME\t\t\tRATE\tQTY\tPRICE"<<endl<<endl;
	cout<<"--------------------------------------------------------------------------------"<<endl<<endl<<endl;	
	return 0;
}

int sales_history()
{
	int i=1,no=1;
	float total_sales=0.0;
	for(i=1;i<::invoice;++i)
		total_sales+=sale[i].net_total;
	if((::invoice-1)>5)
	{
		no=(::invoice-1)/5;
	}
	i=::invoice-1;
	int temp=no;
	for(int j=1;j<=no+1;j++)
	{
		header(1);
		cout<<"\t\t\t\t  SALES HISTORY"<<endl;
		cout<<"\t\t\t\t  -------------"<<endl<<endl;
		cout<<" >> TOTAL SALES   :  "<<total_sales<<" SR"<<endl;
		cout<<"    ==================================="<<endl;
		for(;i>0;--i)
		{
			cout<<"\n";
			cout<<" >> INVOICE NO. : "<<i<<endl;
			cout<<"    -------------------"<<endl;
			cout<<"\t\t ";cout<<" >> TOTAL      : "<<sale[i].total_bill<<" SR"<<endl<<endl;
			if(sale[i].discount!=0)
			{
			cout<<"\t\t ";cout<<" >> DISCOUNT   : "<<sale[i].discount<<" SR"<<endl<<endl;
			}
			cout<<"\t\t ";cout<<" >> NET TOTAL  : "<<sale[i].net_total<<" SR"<<endl<<endl;
			if(i==5*temp)
			{
				temp--;
				break;
			}
		}
		if((j+1)<=(no+1))
		{
			cout<<"\nHit ENTER To VIEW PAST SALES...";
			cin.get();
		}
	}
	return 0;
}
int admin_ctrl(int sno)
{
	int flag=0,go=0,total=0,i=0,error=0;
	char menuchoice[5];
	//flag=login(2);
	if(flag==3)
		return 3;
	flag=0,go=0;
	do
	{
		do
		{
			admin_menu();
			cout<<"\n";
			if(error==1)
			{
				cout<<"!.....INVALID CHOICE.....!";
				error=0;
			}
			cout<<"\n\n";
			cout<<"Enter Your CHOICE : ";
			cin.getline(menuchoice,5);
		}while(!strcmp(menuchoice,""));
		total=0;
		for(i=0;menuchoice[i]!='\0';++i)
		{
			total+=menuchoice[i];
		}
		flag=0;
		switch(total)
		{
		case 49:
			go=parental_ctrl();
			flag=0;
			break;
		case 50:
			flag=0;
			go=init_all(sno);
			if(!go)
			{
				cout<<"Hit ENTER To Continue .. ";
				if(cin.get()||!cin.get()){}
				main();
			}
			break;
		case 51:								//VIEW PAST INVOICES BY INVOICE NO.
			go=invoice_history();
			break;
		case 52:
			return 3;
			break;
		default:
			break;
		}
		if(total!=49&&total!=50&&total!=51&&total!=52)error=1;
		if(go!=3&&error==0)
		{
			cout<<"\n\n Hit ENTER To Continue .. ";
			if(cin.get()||!cin.get()){}
		}
	}while(flag||!flag);
	return 0;
}
int invoice_history()
{
	int flag=0;
	char inv_temp[6];
	do
	{
		header(1);
		cout<<"\t\t\t\t INVOICE HISTORY "<<endl;
		cout<<"\t\t\t\t-----------------"<<endl;
		cout<<"\n\n";
		if(!flag||flag==1)
			cout<<"\t\t\t\t\t\t\t  HIT \'0\' TO GO BACK <<";
		if(flag==2)
		cout<<"  !.....|| INVOICE NOT FOUND ||.....!\t\t\t  HIT \'0\' TO GO BACK <<";
		cout<<"\n\n";
		cout<<"  Enter The INVOICE NO.: ";
		cin.getline(inv_temp,6);
		if(!strcmp(inv_temp,""))
			flag=1;
		if(atoi(inv_temp)>=::invoice)
			flag=2;
		if(!strcmp(inv_temp,"0"))
			return 3;
		if(atoi(inv_temp)<::invoice&&atoi(inv_temp)>0&&atoi(inv_temp)!=0)
			flag=0;
	}while(flag);
	int no=atoi(inv_temp);
	header(1);
	cout<<"\t\t\t\t SEARCH HISTORY "<<endl;
	cout<<"\t\t\t\t----------------"<<endl;
	cout<<"\n";
	cout<<" >> INVOICE NUMBER : "<<inv_temp<<"\t\t\t\t\t";
	cout<<"\n\n";
	cout<<"--------------------------------------------------------------------------------"<<endl;
	cout<<"SNO.\tBARCODE\t\tPRODUCT NAME\t\t\tRATE\tQTY\tPRICE"<<endl<<endl;
	cout<<"--------------------------------------------------------------------------------"<<endl;
	cout<<"\n";
	for(int k=1;k<=sale[no].item_ctr;++k)
	{
		cout<<k<<".";sale[no].show_item(sale[no].item[k],1);
		
	}
	cout<<"--------------------------------------------------------------------------------"<<endl;
	cout<<"\t\t\t\t\t\t ";cout<<" >> TOTAL      : "<<sale[no].total_bill<<" SR"<<endl<<endl;
	cout<<"\t\t\t\t\t\t ";cout<<" >> DISCOUNT   : "<<sale[no].discount<<" SR"<<endl<<endl;
	cout<<"\t\t\t\t\t\t ";cout<<" >> NET TOTAL  : "<<sale[no].net_total<<" SR"<<endl<<endl;
	cout<<"--------------------------------------------------------------------------------"<<endl;
	return 0;
}
int init_all(int sno)
{
	int flag=0,i=0;
	char choice[5],curr_pwd[20]="";
MAIN:
	do
	{
		header(1);
		cout<<"\t\t\t     DATABASE INITIALIZATION "<<endl;
		cout<<"\t\t\t    -------------------------"<<endl;
		cout<<"\n\n";
		cout<<"   !!....WARNING....!!";
		cout<<"\n";
		cout<<"   ===================";
		cout<<"\n\n";
		cout<<"   >> INITIALIZING THE DATABASE IN THE LOSS OF ALL DATA PERTAINING TO \n\n      ITEMS AND SALES HISTORY ....... !!! "<<endl;
		cout<<"\n\n";
		cout<<"   >> THE DATABASE WILL BE LIKE A FRESHLY BOUGHT ONES ...... "<<endl;
		cout<<"\n\n";
		cout<<"                    Are You SURE To FORMAT ?       >> ENTER : YES"<<endl<<endl;
		cout<<"                                                   >>     N : NO "<<endl;
		cout<<"\n";
		if(flag==1)
			cout<<"                                  !=====INVLAID CHOICE=====!!";
		cout<<"\n\n";
		flag=0;
		cout<<"                         Enter Your CHOICE                  : ";
		cin.getline(choice,5);
		if(strcmpi(choice,"N"))
			flag=1;
		if(!strcmpi(choice,""))
			break;
	}while(flag);
	if(!strcmpi(choice,"N"))
		return 3;
	flag=0;
	do
	{
		header(1);
		cout<<"\t\t\t     DATABASE INITIALIZATION "<<endl;
		cout<<"\t\t\t    -------------------------"<<endl;
		cout<<endl<<endl;
		cout<<"\n";
		if(!flag)
		{
			cout<<"\t\t\t\t\t\t\t  HIT \'0\' TO GO BACK <<";
		}
		if(flag==1)
		{
			cout<<"  !!=====ENTER YOUR CURRENT PASSWORD=====!!\t\t  HIT \'0\' TO GO BACK <<";
		}
		if(flag==2)
		{
			cout<<"  !!=====INVALID CURRENT PASSWORD=====!!\t\t  HIT \'0\' TO GO BACK <<";
		}
		cout<<"\n\n";
		cout<<" >> CURRENT PASSWORD      :           ";
		cin.getline(curr_pwd,20);
		if(!strcmp(curr_pwd,::password))
			break;
		if(strcmp(curr_pwd,::password))
			flag=2;
		if(!strcmp(curr_pwd,""))
			flag=1;
		if(!strcmp(curr_pwd,"0"))
			break;
	}while(strcmp(curr_pwd,::password));
	if(!strcmp(curr_pwd,"0"))
		goto MAIN;
	//STARTING FORMATTING
	fstream file;
	header(1);
	cout<<"\t\t\t     DATABASE INITIALIZATION "<<endl;
	cout<<"\t\t\t    -------------------------"<<endl;
	cout<<endl<<endl;
	cout<<"\n\n\n";
	cout<<" >> INITIALIZING FORMATTING PROCESS . . . . . "<<endl<<endl;
	for(i=0;i<=750000000;i++);
	file.open("billitems.dat",ios::out|ios::binary);
	file.close();
	cout<<" >> CLEANING UP ITEM DATABASE       . . . . . "<<endl<<endl;
	for(i=0;i<=750000000;i++);
	file.open("dataitems.txt",ios::out);
	file.close();
	cout<<" >> CLEANING UP SALES INFORMATION   . . . . . "<<endl<<endl;
	for(i=0;i<=750000000;i++);
	file.open("invoice.txt",ios::out);
	file.close();
	cout<<" >> SETTING ALL COUNTERS TO \'0\'    . . . . . "<<endl<<endl;
	for(i=0;i<=750000000;i++);
	file.open("parental.txt",ios::out);
	file.close();
	cout<<" >> FINISHING FORMATTING PROCESS    . . . . . "<<endl<<endl;
	for(i=0;i<=750000000;i++);
	file.open("serial.txt",ios::out);
	file.close();
	header(1);
	cout<<"\t\t\t     DATABASE INITIALIZATION "<<endl;
	cout<<"\t\t\t    -------------------------"<<endl;
	cout<<endl<<endl;
	cout<<"\n\n\n";
	cout<<" >> !! *** DATABASE FORMATTING IS COMPLETED *** !! << "<<endl;
	cout<<"    ------------------------------------------------- "<<endl;
	cout<<"\n\n";
	cout<<" >> USERNAME   :   amasi "<<endl<<endl;
	cout<<" >> PASSWORD   :   amasi "<<endl<<endl;
	return 0;
}
void menu()
{
	header(1);
	cout<<"\t\t\t\t    MAIN MENU "<<endl;
	cout<<"\t\t\t\t   -----------"<<endl;
	cout<<"\n\t\t";
	for(int i=0;i<51;++i)
		cout<<(char)220;
	cout<<"\n\t\t"<<(char)219<<"                                                 "<<(char)219;
	cout<<"\n\t\t|  >> 1.  New Product Entry                       |";
	cout<<"\n\t\t|                                                 |";
	cout<<"\n\t\t|  >> 2.  Edit Product Data                       |";
	cout<<"\n\t\t|                                                 |";
	cout<<"\n\t\t|  >> 3.  All Product Data                        |";
	cout<<"\n\t\t|                                                 |";
	cout<<"\n\t\t|  >> 4.  Search Product Data                     |";
	cout<<"\n\t\t|                                                 |";
	cout<<"\n\t\t|  >> 5.  Delete Product Data                     |";
	cout<<"\n\t\t|                                                 |";
	cout<<"\n\t\t|  >> 6.  Sales & Invoice                         |";
	cout<<"\n\t\t|                                                 |";
	cout<<"\n\t\t|  >> 7.  Sales History                           |";
	cout<<"\n\t\t|                                                 |";
	cout<<"\n\t\t|  >> 8.  Administrative Tools                    |";
	cout<<"\n\t\t|                                                 |";
	cout<<"\n\t\t|  >> 9.  Log Off                                 |";
	cout<<"\n\t\t|                                                 |";
	cout<<"\n\t\t|  >> 10. Exit                                    |";
	cout<<"\n\t\t"<<(char)219<<"                                                 "<<(char)219;
	cout<<"\n\t\t";
	for(i=0;i<51;++i)
		cout<<(char)223;
	cout<<endl<<endl;
}

void admin_menu()
{
	header(1);
	cout<<"\t\t\t\t    ADMIN MENU "<<endl;
	cout<<"\t\t\t\t   ------------"<<endl;
	cout<<"\n\t\t";
	for(int i=0;i<51;++i)
		cout<<(char)220;
	cout<<"\n\t\t"<<(char)219<<"                                                 "<<(char)219;
	cout<<"\n\t\t|  >> 1.  Change Username & Password              |";
	cout<<"\n\t\t|                                                 |";
	cout<<"\n\t\t|  >> 2.  Reset Supermarket Database              |";
	cout<<"\n\t\t|                                                 |";
	cout<<"\n\t\t|  >> 3.  View Past Invoices                      |";
	cout<<"\n\t\t|                                                 |";
	cout<<"\n\t\t|  >> 4.  Main Menu                               |";
	cout<<"\n\t\t"<<(char)219<<"                                                 "<<(char)219;
	cout<<"\n\t\t";
	for(i=0;i<51;++i)
		cout<<(char)223;
	cout<<endl<<endl;
}

void footer()
{
	system("cls");
	for(int i=0;i<=18;++i)
		cout<<'\n';
	cout<<"\n\t\t*----------------------------------------------------*";
	cout<<"\n\t\t|                                                    |";
	cout<<"\n\t\t|          THANK YOU FOR USING THIS PROGRAMME        |";
	cout<<"\n\t\t|                                                    |";
	cout<<"\n\t\t|               PROGRAMMED & DESIGNED BY             |";
	cout<<"\n\t\t|             ----------------------------           |";
	cout<<"\n\t\t|                   MOHAMMED AZHAR                   |";
	cout<<"\n\t\t|                                                    |";
	cout<<"\n\t\t*----------------------------------------------------*"<<endl;
	getchar();
	exit(0);
}

void logged_off()
{
	header(1);
	cout<<""<<endl;
	cout<<""<<endl;
	cout<<"\n\t\t*-------------------------------------------------*";
	cout<<"\n\t\t|                                                 |";
	cout<<"\n\t\t|                                                 |";
	cout<<"\n\t\t|                                                 |";
	cout<<"\n\t\t|                                                 |";
	cout<<"\n\t\t|                                                 |";
	cout<<"\n\t\t|                                                 |";
	cout<<"\n\t\t|                                                 |";
	cout<<"\n\t\t|                                                 |";
	cout<<"\n\t\t|                    LOGGED OFF                   |";
	cout<<"\n\t\t|                  --------------                 |";
	cout<<"\n\t\t|                                                 |";
	cout<<"\n\t\t|           !!...Hit ENTER To LOG IN...!!         |";
	cout<<"\n\t\t|                                                 |";
	cout<<"\n\t\t|                                                 |";
	cout<<"\n\t\t|                                                 |";
	cout<<"\n\t\t|                                                 |";
	cout<<"\n\t\t|                                                 |";
	cout<<"\n\t\t|                                                 |";
	cout<<"\n\t\t|                                                 |";
	cout<<"\n\t\t|                                                 |";
	cout<<"\n\t\t|                                                 |";
	cout<<"\n\t\t*-------------------------------------------------*"<<endl<<endl;
}