1 #include "apue.h"
2
3 static void my_exit1(void);
4 static void my_exit2(void);
5
6
7 int main(void)
8 {
9 int ret = -1;
10
11 ret = atexit(my_exit2);
12 if(ret != 0)
13 err_sys("can't not register my_exit2\r\n");
14
15 ret = atexit(my_exit1);
16 if(ret != 0)
17 err_sys("can't not register my_exit1\r\n");
18
19 ret = atexit(my_exit1);
20 if(ret != 0)
21 err_sys("can't not register my_exit1\r\n");
22
23 printf("main done\r\n");
24
25 exit(0);
26
27 }
28
29 static void my_exit1(void)
30 {
31 printf("first exit handler\r\n");
32 }
33 static void my_exit2(void)
34 {
35 printf("second exit handler\r\n");
36 }
