#include<ctime> clock_t start =clock(); /**//* start timing */ clock_t end=clock(); double time=((double)(end-start))/(double)CLK_TCK; printf("%g ", time); width="728" scrolling="no" height="90" frameborder="0" align="middle" src="http://download1.youkuaiyun.com/down3/20070601/01184120111.htm" marginheight="0" marginwidth="0">