error: ‘Sleep’ was not declared in this scope

这个错误是因为`Sleep`函数没有在当前的作用域中声明。解决这个问题的方法是在代码中添加`#include <windows.h>`。`Sleep`函数是Windows平台下的一个函数，用于暂停程序的执行一段时间。通过包含`windows.h`头文件，可以让编译器知道`Sleep`函数的存在并正确编译代码。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
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