简单统计
#include<Windows.h> DWORD startTime = GetTickCount();//计时开始 ...代码块 DWORD endTime = GetTickCount();//计时结束 cout << "耗时:" << endTime - startTime << "ms" << endl;
精确统计
#include<chrono> auto start=std::chrono::high_resolution_clock::now(); ...代码块 auto end = std::chrono::high_resolution_clock::now(); cout << "耗时:" << std::chrono::duration_cast<std::chrono::milliseconds>(end - start).count() << "ms" << endl;