437     double totalTime = 0;  variable
442         totalTime += (end.tv_sec - start.tv_sec) + (end.tv_usec - start.tv_usec) / 1000000.0;
447     cout << "1000 times finish, run time is " << totalTime << endl;
465     double totalTime = 0;  variable
473         totalTime += (end.tv_sec - start.tv_sec) + (end.tv_usec - start.tv_usec) / 1000000.0;
476     cout << "1000 times finish, run time is " << totalTime << endl;
497     double totalTime = 0;  variable
507     cout << "1000 times finish, run time is " << totalTime << endl;
531     double totalTime = 0;  variable
540     cout << "1000 times finish, run time is " << totalTime << endl;
568     double totalTime = 0;  variable
576     cout << "1000 times finish, run time is " << totalTime << endl;
607     double totalTime = 0;  variable
615     cout << "1000 times finish, run time is " << totalTime << endl;
634     double totalTime = 0;  variable
645     cout << "1000 times finish, run time is " << totalTime << endl;