C++ auto start = chrono::system_clock::now(); /* do something */ auto end = chrono::system_clock::now(); chrono::duration<double> diff = end-sta
}autoend = std::chrono::high_resolution_clock::now(); std::chrono::duration<double, std::milli> tm = end - start;// 毫秒// std::chrono::duration<double, std::micro> tm = end - start; 微秒std::cout <<"time: "<< tm.count() <<"ms"<< std::endl;return0; } Windows环境 1...
duration<double> time_span = duration_cast<duration<double>>(t2 t1); std::cout << "程序运行时间: " << time_span.count() << " 秒" << std::endl; return 0; } 在这个示例中,我们首先包含了<chrono>库,我们使用high_resolution_clock::now()函数获取程序开始和结束时的时间点,通过计算两个时...
C++使用chrono获取时间差 #include <iostream> #include <chrono> intmain(){ autostart=std::chrono::high_resolution_clock::now(); intres=1; for(inti=0;i<100000;i++){ res++; } autoend=std::chrono::high_resolution_clock::now(); std::chrono::duration<double,std::milli>tm=end-start;//...
// C++ 11#include<chrono>// ...std::chrono::time_point<std::chrono::steady_clock>begin,end;begin=std::chrono::steady_clock::now();// do somethingend=std::chrono::steady_clock::now();std::chrono::duration<double>duration=end-begin;std::cout<<duration.count()<<" sec\n"; ...
std::chrono::duration<double> elapsed = end start; std::cout << "程序运行时间: " << elapsed.count() << " seconds" << std::endl; return 0; } 注意事项: std::chrono::high_resolution_clock提供了尽可能高的精度。 std::chrono::duration用于表示时间间隔。
c++ 11 chrono方式的计时 #include <chrono> auto start = std::chrono::steady_clock::now(); // operations auto end = std::chrono::steady_clock::now(); std::chrono::duration<double> elapsed_seconds = end-start; std::cout << "It took " << elapsed_seconds.count() << " seconds.";...
(); std::this_thread::sleep_for(std::chrono::milliseconds(500)); // 模拟一个延时操作 auto end = high_resolution_clock::now(); auto time_diff = duration_cast<duration<double>>(end - start); std::cout << "程序执行时间为 " << time_diff.count() << " 秒" << std::endl; ...
std::chrono::system_clock::now(); 计算时间差值 start = std::chrono::system_clock::now(); //开始时刻 end = std::chrono::system_clock::now(); //结束时刻 std::chrono::duration<double> elapsed_seconds = end - start; //持续时长 elapsed_seconds.count() * 1000; //毫秒 elapsed_se...
std::chrono::duration<double> duration = end - start; std::cout << "Exiting function: " << functionName << " | Duration: " << duration.count() << " seconds" << std::endl; } private: const char* functionName; std::chrono::high_resolution_clock::time_point start; ...