1 #include<stdio.h>
2 void swap1(int a,int b); //利用异或交换变量的值,值传递
3 void swap2(int* a,int* b); //利用异或交换变量的值,地址传递，这里用指针*
4
5
6 void swap1(int a,int b) /*深拷贝值传递*/
7 {
8 a = a ^ b;
9 b = a ^ b;
10 a = a ^ b;
11 }
12
13 void swap2(int* a,int* b) /*浅拷贝地址传递*/
14 {
15 *a = *a ^ *b;
16 *b = *a ^ *b;
17 *a = *a ^ *b;
18 }
19
20 int main(void)
21 {
22 int a1 = 5,b1 = 10;
23 printf("swap1交换前：地址：a1 = %p,b1 = %p..值：a1 = %d,b1 = %d\n",a1,b1,a1,b1);
24 swap1(a1,b1);
25 printf("swap1交换后：地址：a1 = %p,b1 = %p..值：a1 = %d,b1 = %d\n",a1,b1,a1,b1);
26 int a2 = 5,b2 = 10;
27 printf("swap2交换前：地址：a2 = %p,b2 = %p..值：a2 = %d,b2 = %d\n",a2,b2,a2,b2);
28 swap2(&a2,&b2);
29 printf("swap2交换后：地址：a2 = %p,b2 = %p..值：a2 = %d,b2 = %d\n",a2,b2,a2,b2);
30 return 0;
31 }
