c++ 中的sleep 函数

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标准库中无该函数
但在某些编译系统中有，在有些系统库中有，要根据你那边的环境而定。如:
linux中有，unsigned int sleep(unsigned int seconds)，传入挂起时间，成功返回0，不成功则返回余下的秒数。windows系统中有Sleep函数（注意大写），void Sleep(DWORD dwMilliseconds); 提供挂起的毫秒数。
例如：
#include<iostream>#include<windows.h>using namespace std;int main(){Sleep(3000);//暂停3秒  S要大写return 0;}
Use std::this_thread::sleep_for:
std::chrono::milliseconds timespan(111605); // or whateverstd::this_thread::sleep_for(timespan);
There is also the complimentary std::this_thread::sleep_until.
Prior to C++11, C++ had no thread concept and no sleep capability, so your solution was necessarily platform dependent. Here's a snippet that defines a sleep function for Windows or Unix:

#ifdef _WIN32    #include <windows.h>    void sleep(unsigned milliseconds)    {        Sleep(milliseconds);    }#else    #include <unistd.h>    void sleep(unsigned milliseconds)    {        usleep(milliseconds * 1000); // takes microseconds    }#endif

But a much simpler pre-C++11 method is to use boost::this_thread::sleep.