C语言 带参数宏定义练习&

解题思路:

注意事项:

参考代码:

#include<stdio.h>

#define exchange(a,b) int t;t = a; a = b; b = t

int main()

{

         int a, b;

         scanf_s("%d %d", &a, &b);

         exchange(a, b);

         printf("%d %d %d", a, b,t);

         return 0;

}