有如下交换函数的代码 :
[luoyiran@luoyiran ~]$ vim zhizhen.c
1 #include<stdio.h>
2 void swap(int a, int b)
3 {
4 int tmp;
5 tmp = a;
6 a = b;
7 b = tmp;
8 }
9 int main(void)
10 {
11 int a = 10;
12 int b = 20;
13 swap1(a,b);
14 printf("a=%d,b=%d",a,b);
15 return 0;
16 }