#include<iostream>
#include <ctime>//统计时间需添加的头文件
using namespace std;
void main()
{
clock_t start, finish;
double duration;
start = clock();
......................测试的代码片段
finish = clock();
duration = (double)(finish - start) / CLOCKS_PER_SEC;
printf("%f seconds\n", duration);
}
