SBS.cpp

//Developer: Supriyo 
#include<iostream>
#include<process.h>
#include<fstream>
#include <stdlib.h>
using namespace std;

class head
{
	char Iname[50][50];

public:
	int totalitems;
	float Qty[3];
	float price[3];
	int vatprice[3];
	int tprice[3];
	void input();
	void output();
};
class vat:public head
{
	float vats;
public:
	void vatcal();
	void outputs();
	void sum();
};

//******************************************************************
//	    INPUT FUNCTION
//******************************************************************

void head::input()
{
	system("CLS");
	cout<<"\nEnter number of items= ";
	cin>>totalitems;

	for(int i=0; i<totalitems; i++)
	{
		cout<<"\nEnter name of item "<<i+1<<": ";
		cin>>Iname[i];
		cout<<"Enter quantity: ";
		cin>>Qty[i];
		cout<<"Enter price of item "<<i+1<<": ";
		cin>>price[i];
		tprice[i]=Qty[i]*price[i];
	}
}

//******************************************************************
//	   OUTPUT FUNCTION
//******************************************************************



void head::output()
{
	int a;

	ifstream infile("COUNT.TXT");
	infile>>a;

	ofstream outfile("COUNT.TXT");
	a+=1;
	outfile<<a;
	outfile.close();

	{ofstream outfile("HIS.TXT", ios::app);
	outfile<<endl<<"Bill No.: "<<a<<endl;
	outfile<<"------------------------------------------------------------------------"<<endl;
cout<<"\n";
	cout<<"Name of Item\tQuantity   Price  Total Price\n";
	for(int i=0;i<totalitems;i++)
	{
		outfile<<"Name: "<<Iname[i]<<" Qty: "<<Qty[i]<<" Price: "<<tprice[i]<<endl;
		cout<<Iname[i]<<"\t\t"<<Qty[i]<<"\t   "<<price[i]<<"\t   "<<tprice[i]<<'\n';
	}

	outfile<<"------------------------------------------------------------------------"<<endl;
	outfile.close();
	}
}


//******************************************************************
//	   VAT CALCULATION
//******************************************************************

void vat::vatcal()
{
	input();
	for(int i=0;i<totalitems;i++)
	{
		if(price[i]<=100.00)
		{
			vatprice[i]=tprice[i]+(0.03*tprice[i]);
		}
		else
		{
			vatprice[i]=tprice[i]+(0.1*tprice[i]);
		}
	}
}
//******************************************************************
//	    VAT OUTPUTS
//******************************************************************

void vat::outputs()
{
	output();

	float cash=0,sum=0,qty=0,sumt=0;

	for(int i=0;i<totalitems;i++)
	{
	       sumt+=tprice[i];
		   sum+=vatprice[i];
		   qty+=Qty[i];
	}
	cout<<"\nTotal:";
	cout<<"\n------------------------------------------------------------------------------";
	cout<<"\n\tQuantity= "<<qty<<"\t\t Sum= "<<sumt<<"\tWith Vat:"<<sum;
	cout<<"\n------------------------------------------------------------------------------";

pay:

	cout<<"\n\n\t\t\t****PAYMENT SUMMARY****\n";
	cout<<"\n\t\t\tTotal cash given: ";
	cin>>cash;

	if(cash>=sum)
		cout<<"\n\t\t\tTotal cash repaid: "<<cash-sum<<'\n';
		
	else
	{	cout<<"\n\t\t\tCash given is less than total amount!!!";

	goto pay;
	}
}


//******************************************************************
//	    PROTECTION PASSWORD
//******************************************************************

int passwords()
{

	char p1,p2,p3;

	cout<<"\n\n\n\n\n\n\t\t\tENTER THE PASSWORD: "; //Pass : 000

	cin>>p1;
	cout<<"*";
	cin>>p2;
	cout<<"*";
	cin>>p3;
	cout<<"*";

	if ((p1=='s'||p1=='S')&&(p2=='i'||p2=='I')&&(p3=='d'||p3=='D'))

		return 1;

	else
		return 0;
}
// END of Password.

//****************************************************************
//    	THE MAIN FUNCTION OF PROGRAM
//****************************************************************


int main()
{
	vat obj;
	char opt, ch;
	int a=1;
	ifstream fin;

	a==passwords();
	if(!a)
	{
		for(int i=0;i<2;i++)
		{
			cout<<"\nWrong password try once more\n";
			if(passwords())
			{
				goto last;
			}
			else
			{
				cout<<"\n\n\t\t\t all attempts failed.....";
				cout<<"\n\n\n\t\t\t see you.................. ";
				exit(0);
			}

		}
		cout<<"\t\t\t sorry all attempts failed............. \n \t\t\tinactive";
			 }
	else{
last:;


	 do{
start:
	system("PAUSE");
	system("CLS");
	cout<<"\n\n\t\t\t------------------------------";
	cout<<"\n\t\t\tShop Billing Management System";
	cout<<"\n\t\t\t------------------------------";
	 cout<<"\n\n\t\t\tWhat you want to do?";
	 cout<<"\n\t\t\t1.\tTo enter new entry\n\t\t\t2.\tTo view previous entries\n\t\t\t3.\tExit\n";
	 cout<<"\n\nEnter your option: ";
	 cin>>opt;
	 switch(opt)
	 {
	 case'1':
		 obj.vatcal();

		 obj.outputs();
		 goto start;
	 case'2':

		 fin.open("HIS.TXT", ios::in);
		 while(fin.get(ch))
		 {
			 cout<<ch;
		 }
		 fin.close();

		 goto start;
	 case'3':
		 exit(0);
	 default:
		 cout<<"\a";
	 }

	 }while(opt!=3);
	}
	return 0;
}