clock.cpp

有关程序计时方法的介绍

#include <time.h>
#include <stdio.h>
#include <windows.h>


int main()
{
	int lst = clock(), now;
	for(int k = 0; k < 1000; ++k)
	{
		Sleep(1000);
//		for(int i = 0; i < 5000000; ++i);
		while((now = clock()) == lst);
		printf("Last = %12i\tNow = %12i\tDiff = %12i\n", lst, now, now - lst);
		lst = now;
	}
	return 0;
}