睡眠功能不起作用
[英]Sleep function doesn't work
问题描述
I am using Xcode and I have just started using the sleep() function but for some reason Xcode keeps saying Use of undeclared identifier 'sleep' . 
我正在使用Xcode，我刚刚开始使用sleep()函数，但由于某种原因，Xcode一直在说Use of undeclared identifier 'sleep' 。
Is there anyway around this? 有没有办法解决？ (As you can tell I'm quite new to C++) （你可以说我对C ++很新）
1 个解决方案
解决方案1
10 已采纳 2015-02-24 14:20:44
This may be because you haven't introduced the unistd.h header file. 这可能是因为您没有引入unistd.h头文件。
Hope this helps! 希望这可以帮助！
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