// two_loops.cpp : Defines the entry point for the console application.
//

// #include "stdafx.h"

#include <stdio.h>

#define true 1 

char* s_pMenu = "Select operation:\n"
			  "1 - Add Numbers\n" 
			  "2 - Subtract Numbers\n"
			  "3 - Exit\n";

int main()
{
	int nOp ;
	while(true) 
	{ 
		//  Stuff inside loop. 
		printf (s_pMenu) ;
		scanf ("%d", &nOp) ;

		switch (nOp) 
		{
		case 1: printf ("Add numbers selected\n") ; break ;
		case 2: printf ("Subtract numbers selected\n") ;break ;
		case 3: return 0 ; break ;
		default: printf ("Wrong operation. Try again!\n") ; break ;
		}
	} 

	return 0;
}