C++计时函数 【C/C++】计时函数比较

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【C/C++】计时函数比较

#include <windows.h>
LARGE_INTEGER t1, t2, tc;
QueryPerformanceFrequency(&tc);
QueryPerformanceCounter(&t1);
//do something
QueryPerformanceCounter(&t2);
std::cout << "time:" << ((t2.QuadPart - t1.QuadPart)*1.0 / tc.QuadPart) <<"s"<< std::endl;