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clock_t start_timer, end_timer;
struct timeb start_time, finish_time;
ftime(&start_time);
start_timer = clock();
//在这调用函数做一些事
end_timer = clock();
ftime(&finish_time);
double duration = finish_time.time * 1000 + finish_time.millitm - (start_time.time * 1000 + start_time.millitm);
cout << "Time: " << ((end_timer - start_timer) / double(CLOCKS_PER_SEC)) << endl;
cout << "Time: " << duration << endl;