Supermarket Management System is the system which manages the sales activity done in a supermarket, maintaining the stock details, maintaining the records of the sales done. These aspects involve managing information about the various products, managers, customers, billing etc. This system provides an efficient way of managing the supermarket information. The users will consume less time in calculation and the sales activity will be completed within a fraction of seconds whereas manual system will make the user to write it down which is a long procedure and it also consumes a lot of time.

This project is based on the sales transaction and billing of items in a supermarket. The first activity is based on adding the items to the system along with the rate which are present in the supermarket and the name of the items which the supermarket will agree to sell. This authority is given only to an administrator. Any modifications to be done in the item name and the rate can be done only by an administrator. The administrator also has the right to delete any item.

This Supermarket Management System is written using the C++ programming language.

Code:

#include<fstream>
#include<conio.h>
#include<string.h>
#include<iomanip>
#include<iostream>


using namespace std;

class product
{
	int product_number;
	char product_name[50];
	float product_price,product_quantity,tax,product_discount;
	
	public:

	void create_product()
	{
		cout<<endl<<"Please Enter The Product Number: ";
		cin>>product_number;
		cout<<endl<<"Please Enter The Name of The Product: ";
		cin.ignore();
		cin.getline(product_name ,50);
		cout<<endl<<"Please Enter The Price of The Product: ";
		cin>>product_price;
		cout<<endl<<"Please Enter The Discount (%): ";
		cin>>product_discount;
	}
	
	void show_product()
	{
		cout<<endl<<"Product #: "<<product_number;
		cout<<endl<<"Product Name: "<<product_name;
		cout<<endl<<"Product Price: "<<product_price;
		cout<<endl<<"Discount : "<<product_discount;
	}
	
	int getProduct()
	{
		return product_number;
	}
	
	float getPrice()
	{
		return product_price;
	}
	
	char* getName()
	{
		return product_name;
	}
	
	float getDiscount()
	{
		return product_discount;
	}
}; 
 


fstream fp;
product produc;


void save_product()
{
	fp.open("database.dat",ios::out|ios::app);
	produc.create_product();
	fp.write((char*)&produc,sizeof(product));
	fp.close();
	cout<<endl<<endl<<"The Product Has Been Sucessfully Created...";
	getchar();
}


void show_all_product()
{
	system("cls");
	cout<<endl<<"\t\t@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@";
	cout<<endl<<"\t\tRECORDS.";
	cout<<endl<<"\t\t@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@\n";
	fp.open("database.dat",ios::in);
	while(fp.read((char*)&produc,sizeof(product)))
	{
		produc.show_product();
		cout<<endl<<"@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@\n"<<endl;
		getchar();
	}
	fp.close();
}


void display_record(int num)
{
	bool found=false;
	fp.open("database.dat",ios::in);
	while(fp.read((char*)&produc,sizeof(product)))
	{
		if(produc.getProduct()==num)
		{
			system("cls");
			produc.show_product();
			found=true;
		}
	}
	
	fp.close();
	if(found == true)
	cout<<"\n\nNo record found";
	getchar();
}



void edit_product()
{
	int num;
	bool found=false;
	system("cls");
	cout<<endl<<endl<<"\tPlease Enter The Product #: ";
	cin>>num;
	
	fp.open("database.dat",ios::in|ios::out);
	while(fp.read((char*)&produc,sizeof(product)) && found==false)
	{
		if(produc.getProduct()==num)
		{
			produc.show_product();
			cout<<"\nPlease Enter The New Details of Product: "<<endl;
			produc.create_product();
			int pos=-1*sizeof(produc);
			fp.seekp(pos,ios::cur);
			fp.write((char*)&produc,sizeof(product));
			cout<<endl<<endl<<"\t Record Successfully Updated...";
			found=true;
		}
	}
	fp.close();
	if(found==false)
		cout<<endl<<endl<<"Record Not Found...";
	getchar();
}


void delete_product()
{
	int num;
	system("cls");
	cout<<endl<<endl<<"Please Enter The product #: ";
	cin>>num;
	fp.open("database.dat",ios::in|ios::out);
	fstream fp2;
	fp2.open("Temp.dat",ios::out);
	fp.seekg(0,ios::beg);
	while(fp.read((char*)&produc,sizeof(product)))
	{
		if(produc.getProduct()!=num)
		{
			fp2.write((char*)&produc,sizeof(product));
		}
	}
	fp2.close();
	fp.close();
	remove("database.dat");
	rename("Temp.dat","database.dat");
	cout<<endl<<endl<<"\tRecord Deleted...";
	getchar();
}


void product_menu()
{
	system("cls");
	fp.open("database.dat",ios::in);

	cout<<endl<<endl<<"\t\tProduct MENU\n\n";
	cout<<"@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@\n";
	cout<<"P.NO.\t\tNAME\t\tPRICE\n";
	cout<<"@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@\n";
	while(fp.read((char*)&produc,sizeof(product)))
	{
		cout<<produc.getProduct()<<"\t\t"<<produc.getName()<<"\t\t"<<produc.getPrice()<<endl;
	}
	fp.close();
}

 

void place_order()
{
	int order_arr[50],quan[50],c=0;
	float amt,damt,total=0;
	char ch='Y';
	product_menu();
	cout<<"\n@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@";
	cout<<"\n PLACE YOUR ORDER";
	cout<<"\n@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@\n";
	do{
		cout<<"\n\nEnter The Product #: ";
		cin>>order_arr[c];
		cout<<"\nQuantity: ";
		cin>>quan[c];
		c++;
		cout<<"\nDo You Want To Order Another Product ? (y/n)";
		cin>>ch;
		}while(ch=='y' ||ch=='Y');
	cout<<"\n\nThank You...";
	getchar();
	system("cls");
	cout<<"\n\n********************************INVOICE************************\n";
	cout<<"\nPr No.\tPr Name\tQuantity \tPrice \tAmount \tAmount after discount\n";
	for(int x=0;x<=c;x++)
	{
		fp.open("database.dat",ios::in);
		fp.read((char*)&produc,sizeof(product));
		while(!fp.eof())
		{	
			if(produc.getProduct()==order_arr[x])
			{
				amt=produc.getPrice()*quan[x];
				damt=amt-(amt*produc.getDiscount()/100);
				cout<<"\n"<<order_arr[x]<<"\t"<<produc.getName()<<"\t"<<quan[x]<<"\t\t"<<produc.getPrice()<<"\t"<<amt<<"\t\t"<<damt;
				total+=damt;
			}
			fp.read((char*)&produc,sizeof(product));
		}
		fp.close();
	}
	cout<<"\n\n\t\t\t\t\tTOTAL = "<<total;
	getchar();
}



void admin_menu()
{
	system("cls");
	int option;
	cout<<"\t@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@";
	cout<<"\n\tPress 1 to CREATE PRODUCT";
	cout<<"\n\tPress 2 to DISPLAY ALL PRODUCTS";
	cout<<"\n\tPress 3 to QUERY ";
	cout<<"\n\tPress 4 to MODIFY PRODUCT";
	cout<<"\n\tPress 5 to DELETE PRODUCT";
	cout<<"\n\tPress 6 to GO BACK TO MAIN MENU";
	cout<<"\n\t@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@";

	cout<<"\n\n\tOption: ";
	cin>>option;
	switch(option)
	{
		case 1: system("cls");
				save_product();
				break;
				
		case 2: show_all_product();
				break;
				
		case 3:
				int num;
				system("cls");
				cout<<"\n\n\tPlease Enter The Product Number: ";
				cin>>num;
				display_record(num);
				break;
				
		case 4: edit_product();
		break;
		
		case 5: delete_product();
		        break;
				
		case 6: system("cls");
				break;
		
		default:admin_menu();
	}
}


int main(int argc, char *argv[])
{
	system("cls");
	system("color 05");
  	cout<<"\t\t\t\t*\t*";
  	cout<<"\t\t\t\t**\t**";
   	cout<<"\t\t\t\t***\t***";
   	cout<<"\t\t\t\t****\t****";
   	cout<<"\t\t\t\t*****\t*****";
    cout<<"\t\t\t\t******\t******";
   	cout<<"\t\t\t\t*******\t*******";
   	cout<<"\t\t\t\t*******\t*******";
   	cout<<"\t\t\t\t******\t******";
   	cout<<"\t\t\t\t*****\t*****";
   	cout<<"\t\t\t\t****\t****";
   	cout<<"\t\t\t\t***\t***";
   	cout<<"\t\t\t\t**\t**";
   	cout<<"\t\t\t\t*\t*";
	int option;
	
	for(;;)
	{

		cout<<"\n\t@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@";
		cout<<"\n\t1. CUSTOMER";
		cout<<"\n\t2. ADMINISTRATOR";
		cout<<"\n\t3. EXIT";
		cout<<"\n\t@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@";
		
		cout<<"\n\tOption: ";
		cin>>option;
		
		switch(option)
		{
			case 1: system("cls");
					place_order();
					getchar();
					break;
					
			case 2: admin_menu();
					break;
					
			case 3: 
					cout<<"\n\t@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@";
					cout<<"\n\tGood Bye!";
					cout<<"\n\t@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@\n";
					exit(0);
			
			default :cout<<"Invalid Input...\n";
		}

	}
}