return 0; a problem out here!!

[Swapnil2000]

Please have a look into the code Below...
Using Visual Studio 2013.

#include"stdafx.h"
#include<iostream>
#include<conio.h>
#include<stdlib.h>
#include<string>
#include<dos.h>
#include<Windows.h>

using namespace std;

int loginPass();
void ins();

void wlcscrn()
{
	system("cls");
	cout << "                      Universal Lab           ";
	cout << "\n    ULF VER : 01/01                   15/09/2015";
	Sleep(3000);
}

void loginUser()
{
	system("cls");
	string a, user ="guest";
	cout << "Username - ";
	cin >> a;
	if (a == user)
	{
		cout << "";
	}
	else
	{
		cout << "Incorrect Username";
		loginUser();
	}
}


int loginPass()
{
	int b = 0000, c;
	cout << "Password - ";
	cin >> c;
	if (b != c)
	{
		cout << "Incorrect Password!";
		_getch();
		return 0;
	}
	else
	{
		cout << "Login Successful.";
		_getch();
	}
}
void ins()
{
	system("cls");
	int d = 1, e = 2, f;
	cout << "Insert Tray                            Single - " << d;
	cout << "\nLoad Drum                              Double - " << e;
	cin >> f;
	if (f == d)
		std::cout << "Single";
	else if (f == e)
		std::cout << "Double";
	else
		std::cout << "Invalid Entry";
	_getch();
}

void main()
{
	wlcscrn();
	loginUser();
	loginPass();
	ins();
}

In loginPass function, I want that the Program Ends if Password Entered is WRONG.

When I enter a wrong Password It should End the program... but it goes to ins function...

return 0; doesn't end my program... I'm a complete beginner..
--> Please Help Me and get me solution to this...
I want to End program if password entered is wrong.

\\Apologizes for my bad english...

[integralfx]

Use the exit function.
http://www.cplusplus.com/reference/cstdlib/exit/

[Peter87]

The return statement only ends the current function. If you have a function with a non-void return type you should always make sure it returns a value. In loginPass() you don't always return a value.

If loginPass() returns 0 when login fails and 1 when it succeeds you could check the return value in main, where you call the function. If the return value is 1 you call the ins() function, otherwise you just let the main function end.

[Swapnil2000]

@integralfx

Many thanks to you!!!!

@Peter87

Thanks to make me understand that return 0; would only end my function and not the whole program!!


--> Thanks to both of you!!!