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  wszaizhj 2010-12-04 00:00:00

  #include <stdio.h> #include <stdlib.h> #include <time.h> void sleep( clock_t wait ); void main( void ) { long i = 600000L; clock_t start， finish; double duration; /* Delay for a specified time. */ printf( "Delay for three seconds\n" ); sleep( (clock_t)3 * CLOCKS_PER_SEC ); printf( "Done!\n" ); /* Measure the duration of an event. */ printf( "Time to do %ld empty loops is "， i ); start = clock(); while( i-- ) ; finish = clock(); duration = (double)(finish - start) / CLOCKS_PER_SEC; printf( "%2.1f seconds\n"， duration ); } /* Pauses for a specified number of milliseconds. */ void sleep( clock_t wait ) { clock_t goal; goal = wait + clock(); while( goal > clock() ) ; } If you have another problems，you may call me.

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• 

  酒醉伊人__e 2016-01-09 00:00:00

  获取机器时钟。

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• 

  冰旭冰旭冰 2010-12-04 00:00:00

  #include <windows.h> #include <stdio.h> #include <time.h> typedef long ClockT; ClockT start; ClockT finish; double dtime; int main () { //开始计时保存到start start=clock(); //具体运算 Sleep(1900); //结束计时保存到finish finish=clock(); dtime=(double)(finish-start); printf("精确时间: %lf\n"，dtime); printf("一般时间: %lf\n"，dtime/CLOCKS_PER_SEC); return 0; }

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• 

  eryrejk 2017-10-07 22:57:45

  #include <ctime> #include <iostream> using namespace std; int main () { clock_t start， finish; //typedef long clock_t; double totaltime; start = clock(); //clock():Current time of CPU for (int i = 0; i < 1000000; i++) { } finish=clock(); totaltime=(double)(finish-start)/CLOCKS_PER_SEC; cout<<"\nRuntime is: " << totaltime << "s" << endl; return 0; } 中间位置是你需要测试的函数，为简便我只写了一个for循环~

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