耗时统计

简单统计

#include

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

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(end - start).count() << "ms" << endl;