#include "time.h"

#include "stdio.h"

#include "stdlib.h"

int main()

{

    system ("color b2");

    time_t start,end;

    start = time(NULL);

    system("pause");

    end = time(NULL);

    printf("The pause used %-.2f seconds.\n",difftime(end,start));//<-

    system("pause");

    return ;

}  

//本文出自 “阿凡达” 博客，请务必保留此出处http://shamrock.blog.51cto.com/2079212/702547