Supermarket Billing System Project Using C++

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Supermarket Billing System Project Using C++

This supermarket billing system is a simple console application built in C++ without the use of graphics. This project will help you to understand basically two things: The use of Stream class and File handling in C++ programming language.

Two classes can be found in this project, class Amount and class Object, where class Amount is inherited from class Object. The project is easy to understand and the source code is presented in an understandable way.

The source code for this project is over 700 lines long, so I haven’t included it here. The code is complete and completely bug-free, but there is room for improvement.

The C++ source code for this supermarket billing system project must be compiled into Code::Blocks using the GCC compiler. Creating Calendars using C Language you look it similar project.

About supermarket billing system in C++:

Supermarket Billing System is a very simple mini project in C++, built as a console application without using graphical features. This is just a demonstration of file handling in C++ language and using the Streams class.

The project is relatively simple to understand as it only has a few features. Understanding source code will give you an idea about file management: how to add, remove, edit, and search data or information in/from a file.

Given Listed below are the important key features of this project:

  • Invoice Report: This shows the invoice report for all items added to the supermarket billing system.
  • Add, Delete or Edit Items: With this feature, you can add, delete and modify item details. When adding an item, you can add information or description such as item number, item name, manufacture date, price, quantity, tax percentage, and more.
  • Show Item Details: This feature allows users to view the item and related details given for the item while adding the item.
#include<iostream>
#include<windows.h>
#include<conio.h>
#include<fstream>
#include<cstring>
#include<cstdio>
#include<cstdlib>
#include<iomanip>
using namespace std;
//global variable declaration
int k=7,r=0,flag=0;
COORD coord = {0, 0};

void gotoxy(int x, int y)
{
    COORD coord;
    coord.X = x;
    coord.Y = y;
    SetConsoleCursorPosition(GetStdHandle(STD_OUTPUT_HANDLE), coord);
}
struct date
{
    int mm,dd,yy;
};

ofstream fout;
ifstream fin;

class item
{
    int itemno;
    char name[25];
    date d;
public:
    void add()
    {
        cout<<"\n\n\tItem No: ";
        cin>>itemno;
        cout<<"\n\n\tName of the item: ";
        cin>>name;
//gets(name);
        cout<<"\n\n\tManufacturing Date(dd-mm-yy): ";
        cin>>d.mm>>d.dd>>d.yy;
    }
    void show()
    {
        cout<<"\n\tItem No: ";
        cout<<itemno;
        cout<<"\n\n\tName of the item: ";
        cout<<name;
        cout<<"\n\n\tDate : ";
        cout<<d.mm<<"-"<<d.dd<<"-"<<d.yy;
    }
    void report()
    {
        gotoxy(3,k);
        cout<<itemno;
        gotoxy(13,k);
        puts(name);
    }
    int retno()
    {
        return(itemno);

    }

};

class amount: public item
{
    float price,qty,tax,gross,dis,netamt;
public:
    void add();
    void show();
    void report();
    void calculate();
    void pay();
    float retnetamt()
    {
        return(netamt);
    }
} amt;

void amount::add()
{
    item::add();
    cout<<"\n\n\tPrice: ";
    cin>>price;
    cout<<"\n\n\tQuantity: ";
    cin>>qty;
    cout<<"\n\n\tTax percent: ";
    cin>>tax;
    cout<<"\n\n\tDiscount percent: ";
    cin>>dis;
    calculate();
    fout.write((char *)&amt,sizeof(amt));
    fout.close();
}
void amount::calculate()
{
    gross=price+(price*(tax/100));
    netamt=qty*(gross-(gross*(dis/100)));
}
void amount::show()
{
    fin.open("itemstore.dat",ios::binary);
    fin.read((char*)&amt,sizeof(amt));
    item::show();
    cout<<"\n\n\tNet amount: ";
    cout<<netamt;
    fin.close();
}

void amount::report()
{
    item::report();
    gotoxy(23,k);
    cout<<price;
    gotoxy(33,k);
    cout<<qty;
    gotoxy(44,k);
    cout<<tax;
    gotoxy(52,k);
    cout<<dis;
    gotoxy(64,k);
    cout<<netamt;
    k=k+1;
    if(k==50)
    {
        gotoxy(25,50);
        cout<<"PRESS ANY KEY TO CONTINUE...";
        getch();
        k=7;
        system("cls");
        gotoxy(30,3);
        cout<<" ITEM DETAILS ";
        gotoxy(3,5);
        cout<<"NUMBER";
        gotoxy(13,5);
        cout<<"NAME";
        gotoxy(23,5);
        cout<<"PRICE";
        gotoxy(33,5);
        cout<<"QUANTITY";
        gotoxy(44,5);
        cout<<"TAX";
        gotoxy(52,5);
        cout<<"DEDUCTION";
        gotoxy(64,5);
        cout<<"NET AMOUNT";
    }
}

void amount::pay()
{
    show();
    cout<<"\n\n\n\t\t*********************************************";
    cout<<"\n\t\t                 DETAILS                  ";
    cout<<"\n\t\t*********************************************";
    cout<<"\n\n\t\tPRICE                     :"<<price;
    cout<<"\n\n\t\tQUANTITY                  :"<<qty;
    cout<<"\n\t\tTAX PERCENTAGE              :"<<tax;
    cout<<"\n\t\tDISCOUNT PERCENTAGE         :"<<dis;
    cout<<"\n\n\n\t\tNET AMOUNT              :Rs."<<netamt;
    cout<<"\n\t\t*********************************************";
}

int main()
{
    cout.setf(ios::fixed);
    cout.setf(ios::showpoint);
    cout<<setprecision(2);
    fstream tmp("temp.dat",ios::binary|ios::out);
menu:
    system("cls");
    gotoxy(25,2);
    cout<<"Super Market Billing ";
    gotoxy(25,3);
    cout<<"===========================\n\n";
    cout<<"\n\t\t1.Bill Report\n\n";
    cout<<"\t\t2.Add/Remove/Edit Item\n\n";
    cout<<"\t\t3.Show Item Details\n\n";
    cout<<"\t\t4.Exit\n\n";
    cout<<"\t\tPlease Enter Required Option: ";
    int ch,ff;
    float gtotal;
    cin>>ch;
    switch(ch)
    {
    case 1:
ss:
        system("cls");
        gotoxy(25,2);
        cout<<"Bill Details";
        gotoxy(25,3);
        cout<<"================\n\n";
        cout<<"\n\t\t1.All Items\n\n";
        cout<<"\t\t2.Back to Main menu\n\n";
        cout<<"\t\tPlease Enter Required Option: ";
        int cho;
        cin>>cho;
        if(cho==1)
        {
            system("cls");
            gotoxy(30,3);
            cout<<" BILL DETAILS ";
            gotoxy(3,5);
            cout<<"ITEM NO";
            gotoxy(13,5);
            cout<<"NAME";
            gotoxy(23,5);
            cout<<"PRICE";
            gotoxy(33,5);
            cout<<"QUANTITY";
            gotoxy(44,5);
            cout<<"TAX %";
            gotoxy(52,5);
            cout<<"DISCOUNT %";
            gotoxy(64,5);
            cout<<"NET AMOUNT";
            fin.open("itemstore.dat",ios::binary);
            if(!fin)
            {
                cout<<"\n\nFile Not Found...";
                goto menu;
            }
            fin.seekg(0);
            gtotal=0;
            while(!fin.eof())
            {
                fin.read((char*)&amt,sizeof(amt));
                if(!fin.eof())
                {
                    amt.report();
                    gtotal+=amt.retnetamt();
                    ff=0;
                }
                if(ff!=0) gtotal=0;
            }
            gotoxy(17,k);
            cout<<"\n\n\n\t\t\tGrand Total="<<gtotal;
            getch();
            fin.close();
        }
        if(cho==2)
        {
            goto menu;
        }
        goto ss;
    case 2:
db:
        system("cls");
        gotoxy(25,2);
        cout<<"Bill Editor";
        gotoxy(25,3);
        cout<<"=================\n\n";
        cout<<"\n\t\t1.Add Item Details\n\n";
        cout<<"\t\t2.Edit Item Details\n\n";
        cout<<"\t\t3.Delete Item Details\n\n";
        cout<<"\t\t4.Back to Main Menu ";
        int apc;
        cin>>apc;
        switch(apc)
        {
        case 1:
            fout.open("itemstore.dat",ios::binary|ios::app);
            amt.add();
            cout<<"\n\t\tItem Added Successfully!";
            getch();
            goto db;

        case 2:
            int ino;
            flag=0;
            cout<<"\n\n\tEnter Item Number to be Edited :";
            cin>>ino;
            fin.open("itemstore.dat",ios::binary);
            fout.open("itemstore.dat",ios::binary|ios::app);
            if(!fin)
            {
                cout<<"\n\nFile Not Found...";
                goto menu;
            }
            fin.seekg(0);
            r=0;
            while(!fin.eof())
            {
                fin.read((char*)&amt,sizeof(amt));
                if(!fin.eof())
                {
                    int x=amt.item::retno();
                    if(x==ino)
                    {
                        flag=1;
                        fout.seekp(r*sizeof(amt));
                        system("cls");
                        cout<<"\n\t\tCurrent Details are\n";
                        amt.show();
                        cout<<"\n\n\t\tEnter New Details\n";
                        amt.add();
                        cout<<"\n\t\tItem Details editted";
                    }
                }
                r++;
            }
            if(flag==0)
            {
                cout<<"\n\t\tItem No does not exist...Please Retry!";
                getch();
                goto db;
            }
            fin.close();
            getch();
            goto db;

        case 3:
            flag=0;
            cout<<"\n\n\tEnter Item Number to be deleted :";
            cin>>ino;
            fin.open("itemstore.dat",ios::binary);
            if(!fin)
            {
                cout<<"\n\nFile Not Found...";
                goto menu;
            }
//fstream tmp("temp.dat",ios::binary|ios::out);
            fin.seekg(0);
            while(fin.read((char*)&amt, sizeof(amt)))
            {
                int x=amt.item::retno();
                if(x!=ino)
                    tmp.write((char*)&amt,sizeof(amt));
                else
                {
                    flag=1;
                }
            }
            fin.close();
            tmp.close();
            fout.open("itemstore.dat",ios::trunc|ios::binary);
            fout.seekp(0);
            tmp.open("temp.dat",ios::binary|ios::in);
            if(!tmp)
            {
                cout<<"Error in File";
                goto db;
            }
            while(tmp.read((char*)&amt,sizeof(amt)))
                fout.write((char*)&amt,sizeof(amt));
            tmp.close();
            fout.close();
            if(flag==1)
                cout<<"\n\t\tItem Succesfully Deleted";
            else if (flag==0)
                cout<<"\n\t\tItem does not Exist! Please Retry";
            getch();
            goto db;
        case 4:
            goto menu;
        default:
            cout<<"\n\n\t\tWrong Choice!!! Retry";
            getch();
            goto db;
        }
    case 3:
        system("cls");
        flag=0;
        int ino;
        cout<<"\n\n\t\tEnter Item Number :";
        cin>>ino;
        fin.open("itemstore.dat",ios::binary);
        if(!fin)
        {
            cout<<"\n\nFile Not Found...\nProgram Terminated!";
            goto menu;
        }
        fin.seekg(0);
        while(fin.read((char*)&amt,sizeof(amt)))
        {
            int x=amt.item::retno();
            if(x==ino)
            {
                amt.pay();
                flag=1;
                break;
            }
        }
        if(flag==0)
            cout<<"\n\t\tItem does not exist....Please Retry!";
        getch();
        fin.close();
        goto menu;
    case 4:
        system("cls");
        gotoxy(20,20);
        cout<<"ARE YOU SURE, YOU WANT TO EXIT (Y/N)?";
        char yn;
        cin>>yn;
        if((yn=='Y')||(yn=='y'))
        {
            gotoxy(12,20);
            system("cls");
            cout<<"************************** THANKS **************************************";
            getch();
            exit(0);
        }
        else if((yn=='N')||(yn=='n'))
            goto menu;
        else
        {
            goto menu;
        }
    default:
        cout<<"\n\n\t\tWrong Choice....Please Retry!";
        getch();
        goto menu;
    }
    return 0;
}

Reference form:- codewithc.com, sourcecodehero.com, Javapoint.com

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