clock函数学习链接

http://blog.csdn.net/roma823/article/details/6403573

下面这篇文章讨论clock_t与time_t的区别

http://www.cnblogs.com/chenyadong/archive/2011/12/03/2274783.html

但是我这个代码在VC下与他的结果不同

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

int main(){
	clock_t clock_start,clock_end;
	time_t time_start,time_end;

	time(&time_start);
	Sleep(5000);
	time(&time_end);
	printf("%f
",difftime(time_end,time_start));

	clock_start=clock();
	Sleep(5000);
	clock_end=clock();
	printf("%f
",(double)(clock_end-clock_start)/CLOCKS_PER_SEC);


	return 0;
}

Y？