参考:
【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;