Thread: will the header file affect the program?

i have a testing program with the following code:

Code:

#include "stdafx.h"
#include <iostream.h>

int _tmain(int argc, _TCHAR* argv[])
{
	int choice,ended = 0;
	while(ended!=2)
	{
		cout <<"enter your choice";
		cin >> choice;
		if (choice==1)
		{
			cout << "hello\n";
		}
		else
		{
			cout << "bye\n";
			ended = 2;
		}
	}
	return 0;
}

this program works well but when i tried to do the same in a different program, it wont work. once i input 1, the program ended.

i have include several header files in the second porgram and they are:

Code:

#include "stdafx.h"
#include <fstream.h>
#include <iostream.h>
#include <string.h>
#include <stdlib.h>

the second program perform some file read write tasks and running some *.bat file

i wonder the header file will affect the result of the program.please help.
i am using studio.net.....

i have test the first program, when i input noe, the program will loop...

but i cant do so in teh second program.....

by the way ...i have another question to ask.

look at the following code:

Code:

#include "stdafx.h"
#include <iostream.h>
#include <conio.h>

int _tmain(int argc, _TCHAR* argv[])
{
	cout <<"hello1";
	char choice;
	int end=0;
	while(end!=2)
	{
		cout <<"enter your choice";
		
		if (choice = getch() =='1')
		{
		        cout << "hi";
		}
		else
		{
			cout << "bye\n";
			end = 2;
		}
	}
	return 0;
}

the problem is when i run the program, the "hello1" will not be printedon the screen.....how to solve the problem?

> if (choice = getch() =='1')
Check the operator precedence table - this does not mean what you want it to


what do you mean??
you mean i should set choice = getch(),then if (choice == '1')?