计算程序运行时间的两种方法

第一种：

#include<time.h>clock_t start, finish;double duration;start = clock();//放入你想测得函数finish = clock();duration = (double)(finish - start) / CLOCKS_PER_SEC;cout << "function duration is " << duration << endl;

第二种

double t = (double)getTickCount();//放入你想测得函数t = ((double)getTickCount() - t) / getTickFrequency();cout << "function(seconds): " << t << endl;