有错么，大佬们？
#include"stdafx.h"

int average (int a, int b, int c);



int main(void)
{
    int a = 1, b = 2, c = 3;
    int y = average(a, b, c);
    printf("\n the average is%d", y);
}

int average (int a, int b, int c)
{
    return (a + b + c) / 3;
}

没人吗？自己踩踩

VC的

#include <stdio.h>

那些简单的程序框架可以找书看看~~~