#include<stdio.h>
#include<stdarg.h>
#include<Windows.h>
#pragma warning (disable :4996)


int getaver(int num,...){
va_list arg;
int i = 0;
int sum = 0;
va_start(arg, num);
for (i = 0; i < num; i++){
sum = sum + va_arg(arg, int);
}
return sum / num;
va_end(arg);
}


int main(){
int a, b,c;
int num = 3;
printf("請輸入三個數字：\n");
scanf("%d%d%d", &a, &b, &c);
int ret=getaver(num,a,b,c);
printf("輸入的三個數字的平均值為：%d\n", ret);
system("pause");
return 0;
}