#include <stdio.h>

/*
 * comments. This program prints hello world but uses another function
 */

int print_a_message();		// declaration

int main()
{
	if ( print_a_message() < 0 )
		return 1;
	else
		return 0;			// 0 => success
}

int print_a_message()		// function DEFinition
{
	printf("hello, world\n");
	return 0;
}