SBS.cpp

#include<iostream>
#include<fstream>
#include<iomanip>
using namespace std;
class shopping 
{
	private:
		int pcode;
		float price;
		float dis;
		string pname;
		
		public:
			void menu();
			void administrator();
			void buyer();
			void add();
			void edit();
			void rem();
			void list();
			void receipt();
			
};
 void shopping :: menu()
 {
 	m:
 	int choice;
 	string email;
 	string password;
 	cout<<"\t\t\t\t__________________________________________\n\n";
 	cout<<"\t\t\t\t           Supermarket Main Menu          \n\n";
 	cout<<"\t\t\t\t__________________________________________\n\n";
 	cout<<"\t\t\t\t\t|  1) Administrator   |\n";
 	cout<<"\t\t\t\t\t|                     |\n";
 	cout<<"\t\t\t\t\t|  2) Buyer           |\n";
 	cout<<"\t\t\t\t\t|                     |\n";
 	cout<<"\t\t\t\t\t|  3) Exit            |\n";
 	cout<<"\t\t\t\t\t|                     |\n";
 	cout<<"\n\t\t\tPlease select! ";
 	cin>>choice;
 	switch(choice)
 	{
 		case 1:
 			{
 			cout<<"\n\n\t\t\tPlease login. \n";
 			cout<<"\t\t\tEnter Email address. ";
 			cin>>email;
 			cout<<"\t\t\tPassword. ";
 			cin>>password;
 			
 			if(email=="project@gmail.com"&& password=="zero@123")
 			{
 			administrator();	
			}
			else
			{
				cout<<"\t\t\tInvalid Email/Password.\n";	
			}
			break;
			 }
	    case 2:
	 	{
	 		buyer();
		}
	    case 3:
	 	{
	 		exit(0);
	    }
		default:
		{
		 	cout<<"Please select from the given option";
		}
    }
    goto m;
}
void shopping::administrator()
{
	m:
	int choice;
	cout<<"\n\n\n\t\t\t Administrator menu";
	cout<<"\n\t\t\t|____1)Add the product_____|";
	cout<<"\n\t\t\t|                          |";
	cout<<"\n\t\t\t|____2)Modify the product__|";
	cout<<"\n\t\t\t|                          |";
	cout<<"\n\t\t\t|____3)Delete the product__|";
	cout<<"\n\t\t\t|                          |";
	cout<<"\n\t\t\t|____4)Back________________|";
	cout<<"\n\n\t Please enter your choice. ";
	cin>>choice;
	switch(choice)
	{
		case 1:
			{
				add();
			    break;
			}
			
		case 2:
			{
				edit();
				break;
			}
		case 3:
			{
				rem();
				break;
			}
		case 4:
			{
				menu();
				break;
			}
			
			default:
				cout<<"Invalid choice!";
    }
    goto m;
}
void shopping::buyer()
{
	m:
	int choice;
	cout<<"\t\t\t________________\n\n";
	cout<<"\t\t\t 1) Buy product \n\n";
	cout<<"\t\t\t 2) Go back \n\n";
	cout<<"\t\t\t Enter your choice:";
	cin>>choice;
	switch(choice)
	{
		case 1:
			{
				receipt();
			    break;
			}
		case 2:
			{
				menu();
			    break;
			}
		default:
			{
				cout<<"Invalid choice";
			    break;
			}
	}
	goto m;

}
			
void shopping :: add()
{
	m:
	fstream data;
	int c;
	int token=0;
	float p;
	float d;
	string n;
	cout<<"\n\n\t Product code of the product. ";
	cin>>pcode;
	cout<<"\n\n\t Name of the product. ";
	cin>>pname;
	cout<<"\n\n\t Price of the product. ";
	cin>>price;
	cout<<"\n\n\t Discount on the product. ";
	cin>>dis;
	data.open("database.txt",ios::in);
	if(!data)
	{
		data.open("database.txt",ios::app|ios::out);
		data<<" "<<pcode<<" "<<pname<<" "<<price<<" "<<dis<<"\n";
		data.close();
	}
	else
	{
		data>>c>>n>>p>>d;
		while(!data.eof())
		{
		   if (c ==pcode)
    	   token++;
    	   data>>c>>n>>p>>d;
        }
        data.close();
	    if(token==1)
	    goto m; 
	    else{
		    data.open("database.txt", ios:: app|ios:: out); 
		    data<<" "<<pcode<<" "<<pname<<" "<<price<<" "<<dis<<"\n"; 
		    data.close();
		}
    }
    cout<<"\n\n\t\t\tRecord inserted !";
}
void shopping ::edit() 
{
		fstream data, data1; 
		int pkey; 
		int token=0;
		int c; 
		float p; 
		float d; 
		string n;
		cout<<"\n\t\t\t Modify the record! ";
		cout<<"\n\t\t\t Product code:";
		cin>>pkey;
		data.open("database.txt",ios::in);
		if(!data)
			cout<<"\n\nFile doesnot exist!";
		else{
		 	data1.open("database1.txt",ios::app|ios::out);
		 	data>>pcode>>pname>>price>>dis;
		 	while(!data.eof())
		 	{
		 		if(pkey==pcode)
		 		{
		 			cout<<"\n\t\t Product new code :"; 
					cin>>c; 
					cout<<"\n\t\t Name of the product :"; 
					cin>>n; 
					cout<<"\n\t\t Price:"; 
					cin>>p; 
					cout<<"\n\t\t Discount :"; 
					cin>>d;
					data1<<" "<<c<<" "<<n<<" "<<p<<" "<<d<<"\n";
					cout<<"\n\n\t\t Record edited";
					token++;
				 }
				 else
				 {
				 		data1<<" "<<pcode<<" "<<pname<<" "<<price<<" "<<dis<<"\n";
				 }
				 data>>pcode>>pname>>price>>dis;
			
				}
				data.close();
				data1.close();
				remove("database.txt");
				rename("database1.txt","database.txt");
				if(token==0)
				{
					cout<<"\n\n\t\t\tRecord not found sorry!";
				}	
		}
}
void shopping::rem()
{
	fstream data,data1;
	int pkey;
	int token=0;
	cout<<"\n\n\t Delete product";
	cout<<"\n\n\t Product code:";
	cin>>pkey;
	data.open("database.txt",ios::in);
	if(!data)
	{
		cout<<"File doesnot exist.";
	}
	else{
		data1.open("database1.txt",ios::app|ios::out);
		data>>pcode>>pname>>price>>dis;
		while(!data.eof())
	    {
		if(pcode==pkey)
		{
			cout<<"\n\n\tProduct deleted succesfully";
			token++;
		}
		else
		{
			data1<<" "<<pcode<<" "<<pname<<" "<<price<<" "<<dis<<"\n";
			
		}
		data>>pcode>>pname>>price>>dis;
		
	}
	data.close();
	data1.close();
	remove("database.txt");
	rename("database1.txt","database.txt");
	if(token==0)
	{
		cout<<"\n\n Record not found";
	}
}
}

void shopping::list()
{
	fstream data;
	data.open("database.txt",ios::in);
	cout<<"\n\n|______________________________________________________________________________\n";
	cout<<"ProNo\t\t\t\tName\t\t\t\tPrice\n";
	cout<<"\n\n|______________________________________________________________________________\n";
	data>>pcode>>pname>>price>>dis;
	while(!data.eof())
	{
		cout<<pcode<<setw(35)<<pname<<setw(32)<<price<<"\n";
		data>>pcode>>pname>>price>>dis;
	}
	data.close();
}
void shopping::receipt()
{
	fstream data;
	int arrc[100];
	int arrq[100];
	int c=0;
	float amount=0;
	float dis=0;
	float total=0;
	char choice;
	data.open("database.txt",ios::in);
	if(!data)
		cout<<"\n\nEmpty database";
	else{
		data.close();
		list();
		cout<<"\n__________________________________________\n";
		cout<<"\n                                          \n";
		cout<<"\n          Please place the order          \n";
		cout<<"\n           							   \n";
		cout<<"\n__________________________________________\n";
		do{
			m:
			cout<<"\n\n Enter product code:";
			cin>>arrc[c];
			cout<<"\n\n Enter the product quantity:";
			cin>>arrq[c];
			for(int i=0;i<c;i++)
			{
				if(arrc[c]==arrc[i])
				{
					cout<<"\n\n Duplicate product code. please try again!";
					goto m;
					
				}
		    }
			c++;
			cout<<"\n\n Do you want to buy another product? if yes then y else n.";
			cin>>choice;	
		    }
		    while(choice == 'y');
			cout<<"\n\n_______________________________________________________RECEIPT_________________________________________________________________\n";
			cout<<"\nProduct No\t\t  Product Name\t\t   Product Quantity\t  Price  \tAmount  \tAmount with disount\n";
			for(int i=0;i<c;i++)
			{
				data.open("database.txt",ios::in);
				data>>pcode>>pname>>price>>dis;
				while(!data.eof())
				{
					if(pcode==arrc[i])
					{
						amount=price*arrq[i];
						dis=amount-(amount*dis/100);
						total=total+dis;
						cout<<"\n"<<pcode<<setw(35)<<pname<<setw(25)<<arrq[i]<<setw(17)<<price<<setw(14)<<amount<<setw(24)<<dis;
					}
					data>>pcode>>pname>>price>>dis;	
				}
				data.close();		
		    }
		   }
		   cout<<"\n_______________________________________________________________________________________________________________________________";
		   cout<<"\n Total Amount:"<<total;
	}
int main()
{
	shopping s;
	s.menu();
}