与exit()和_exit()不同的输出? [英] different output with exit() and _exit()?

问题描述

为什么显示不同的输出?有人可以深入解释我吗?

why it showing different output???can anyone explain me in depth.

1.

#include <stdlib.h>
 #include <stdio.h>

int main (void)
{
printf ("Using exit ... \ n");
printf ("This is the content in buffer");
exit (0);
}

输出:

使用出口... 这是缓冲区中的内容

Using exit ... This is the content in buffer

2.

# Include <unistd.h>
# Include <stdio.h>

int main (void)
{
printf ("Using exit ... \ n");
printf ("This is the content in buffer");
_exit (0);
}

仅输出:

正在使用退出...

推荐答案

如果我们阅读_exit()的文档，则请注意:

If we read _exit()'s documentation, we note:

导致正常程序终止发生而没有完全清除资源.

Causes normal program termination to occur without completely cleaning the resources.

这大概包括刷新标准输出.

This presumably would include flushing stdout.

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