C语言函数参数的传递详解(共7页).doc

一、三道考题开讲之前，我先请你做三道题目。（嘿嘿，得先把你的头脑搞昏才行唉呀，谁扔我鸡蛋？）考题一，程序代码如下：void Exchg1(int x, int y) int tmp; tmp = x; x = y; y = tmp; printf(x = %d, y = %dn, x, y);main() int a = 4,b = 6; Exchg1(a, b); printf(a = %d, b = %dn, a, b); return(0);输出的结果为：x = _, y=_.a = _, b=_.问下划线的部分应是什么，请完成。考题二，程序代码如下：void Exchg2(int *px, int *py) int tmp = *px; *px = *py; *py = tmp; printf(*px = %d, *py = %d.n, *px, *py);main() int a = 4;