atexit 函数的目的是什么? [英] what is the purpose of atexit function?

问题描述

我知道什么时候把函数的地址传给atexit函数，
函数被执行.

I know when the address of the function is passed to atexit function,
the function is excuted.

#include <stdlib.h>
int atexit(void (*func) void));

但是，使用atexit函数的目的是什么?

However, what is the purpose of using atexit function?

口头意义本身退出"是否与atexit函数有关?

Does verbal meaning itself 'exit' relate to atexit function?

推荐答案

atexit 将用于一些您希望在应用程序终止时执行的代码，而不管它从何处退出.一个例子是应用程序范围的记录器.您将调用 atexit(flush_log)，因此当应用程序退出时，日志将被刷新，而无需开发人员记住刷新它.

atexit would be used for some code that you want to execute when the application terminates, regardless of where it was exited from. One example would be an application-wide logger. You would call atexit(flush_log), so when the application exits, the log will be flushed, without the developer having to remember to flush it.

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