指针交换c语言,指针交换数据C语言源文件（1页）-原创力文档

F:\stc_class\example_pointer_exchange_1\main.c

1 #include "stdio.h"

2 #include "reg51.h"

3 void main()

4 {

5 int a 100,b 10,t 0;

6 int *p1,*p2,*p3;

7 SCON 0x52;

8 TMOD 0x20;

9 TCON 0x69;

10 TH1 0xF3;

11 printf("a=%d,b=%d\n",a,b);

12 p1=&a;

13 p2=&b;

14 p3=p1;

15 p1=p2;

16 p2=p3;

17 printf("*p1=%d,*p2=%d\n",*p1,*p2);

18 printf("a=%d,b=%d\n",a,b);

19 p1=&a;

20 p2=&b;

21 t=*p1;

22 *p1=*p2;

23 *p2=t;

24 printf("*p1=%d,*p2=%d\n",*p1,*p2);

25 printf("a=%d,b=%d\n",a,b);

26 while (1);

27 }

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