在 C 中等待/暂停几秒钟 [英] Wait/Pause an amount of seconds in C

问题描述

我编写了一个小控制台应用程序，我希望它在循环(一段时间)再次开始之前暂停特定秒数.

I wrote a little console application, and I want it to pause for a certain number of seconds before the cycle (a while) starts again.

我正在使用 Windows 操作系统.

I'm working on Windows operating system.

推荐答案

在 Windows 上，执行此操作的函数是 Sleep，它需要毫秒的时间睡觉.要使用 Sleep，您需要包含 windows.h.

On Windows, the function to do this is Sleep, which takes the amount of milliseconds you want to sleep. To use Sleep, you need to include windows.h.

在 POSIX 系统上，函数 sleep(来自 unistd.h)完成了这个:

On POSIX-Systems, the function sleep (from unistd.h) accomplishes this:

   unsigned int sleep(unsigned int seconds);

   DESCRIPTION
          sleep()  makes  the  calling thread sleep until
          seconds seconds have elapsed or a signal arrives which is not ignored.

如果被信号中断，则返回剩余的休眠时间.如果您使用信号，更可靠的解决方案是:

If it is interrupted by a signal, the remaining time to sleep is returned. If you use signals, a more robust solution would be:

 unsigned int time_to_sleep = 10; // sleep 10 seconds
 while(time_to_sleep)
     time_to_sleep = sleep(time_to_sleep);

这当然是假设您的信号处理程序只需要很少的时间.(否则，这将延迟主程序比预期更长的时间)

This is of course assuming your signal-handlers only take a negligible amount of time. (Otherwise, this will delay the main program longer than intended)

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