Thread: continue loop

I am trying to continue this loop until the person enters 0 then it will end up printing out the receipt. But it only lets me enter up to two two items then goes to press any key to continue. Why is it only letting me do two items before it quits? There is more cpp files and an h file but I am not including those here, I'm just stuck on this loop. What am I doing wrong? thanks for the help

Bryan

Code:

#include <iostream>
#include <fstream>
#include <cctype>
#include <string>
//#include "grocery.h"

using namespace std;

int ProdNum;
string ProdName;
float ProdPrice; 
char Taxable;
int Quantity;

const int tax_rate=.075;

int main()

{
	ifstream OpenFile("inventory.txt");
	
	char ch;

      while(!OpenFile.eof())
  {
OpenFile.get(ch);
	cout << ch;
	}
	cout << endl << endl;
	 
	cout << "Thanks for shopping at OUR Market." << endl << endl;

{
	int customer = 1;

	cout << "Enter purchases for customer " << customer++ << endl;	
	cout << "Enter product code 0 to end purchases." << endl << endl;
}
cin >> ProdNum;
 	   

  if (ProdNum!=0)  {
    cin >> ProdNum;
  }
  else  {
    cout<<"Thanks for shopping, your receipt is printed below" << endl << endl;
  }

  //Calculations


/*cout << "Is there another customer? (Y/N) ";
		cin >> customer;
		 while (customer == "Y");
		if (customer == "N")
		cout << "Thanks for shopping at OUR Market." << endl;
		
*/
return 0;
}

There is nothing in your code that would make it loop to ask for more products. You have this code:

Code:

cin >> ProdNum;
 	   

  if (ProdNum!=0)  {
    cin >> ProdNum;
  }
  else  {
    cout<<"Thanks for shopping, your receipt is printed below" << endl << endl;
  }

As you can see, if you enter in anything but 0 the first time, it asks you again, then just continues down to the end. What you want is something like this:

Code:

#include <iostream>
#include <fstream>
#include <cctype>
#include <string>
//#include "grocery.h"

using namespace std;

int ProdNum;
string ProdName;
float ProdPrice; 
char Taxable;
int Quantity;

const int tax_rate=.075;

int main()

{
	ifstream OpenFile("inventory.txt");
	
	char ch;

      while(!OpenFile.eof())
  {
OpenFile.get(ch);
	cout << ch;
	}
	cout << endl << endl;
	 
	cout << "Thanks for shopping at OUR Market." << endl << endl;

int customer = 1;

cout << "Enter purchases for customer " << customer++ << endl;	
cout << "Enter product code 0 to end purchases." << endl << endl;

do
{
     cin << ProdNum;
} while (ProdNum!=0); //loops while the user enters non-zero

cout<<"Thanks for shopping, your receipt is printed below" << endl << endl;

  //Calculations


/*cout << "Is there another customer? (Y/N) ";
		cin >> customer;
		 while (customer == "Y");
		if (customer == "N")
		cout << "Thanks for shopping at OUR Market." << endl;
		
*/
return 0;
}

You're also going to need to implement an array for the product entering part. I mean, the way it is now, you're only storing one Product Number. Each time the user enters a number, it overwrites the last one entered. I'll leave that to you however.

Originally posted by bennyandthejets
You're also going to need to implement an array for the product entering part. I mean, the way it is now, you're only storing one Product Number. Each time the user enters a number, it overwrites the last one entered. I'll leave that to you however.

I suggest a linked list implementation