UNIX C 编程 ---- atexit函数的使用

#include <stdio.h>

static void my_exit1();
static void my_exit2();

int main(void)
{
	if(atexit(my_exit2) != 0)
		printf("error: can't register my_exit2\n");

	if(atexit(my_exit1) != 0)
		printf("error: can't register my_exit1\n");

	printf("main is done!\n");
	return 0;
}

static void
my_exit1()
{
	printf("first exit handler\n");
}

static void
my_exit2()
{
	printf("second exit handler\n");
}

执行这个程序

$ ./a.out
main is done!
first exit handler
second exit handler

----------------------------------------------------------------

终止程序每登记一次，就会被调用一次。