如何在Win32中获取CPU周期数？

#include<windows.h>
#include<iostream>

int main() {
    LARGE_INTEGER frequency;
    QueryPerformanceFrequency(&frequency);

    LARGE_INTEGER start;
    QueryPerformanceCounter(&start);

    // 在这里执行你的代码

    LARGE_INTEGER end;
    QueryPerformanceCounter(&end);

    double cycles = static_cast<double>(end.QuadPart - start.QuadPart);
    double seconds = cycles / static_cast<double>(frequency.QuadPart);

    std::cout << "CPU cycles: "<< cycles<< std::endl;
    std::cout << "Time elapsed: "<< seconds << " seconds"<< std::endl;

    return 0;
}