c++怎么取时钟？

[「已注销」]

想计算程序运行的时间，一般在0.01秒一下

怎么样才可以记录呢？
怎么取时钟？

[pengzhixi]

那估计time满足不了你的要求了.

[blingpro]

看一下多媒体定时器

[downmooner]

#include<windows.h>

DWORD GetTickCount(void);

[tianma2005123]

timeGetTime()
QueryPerformanceFrequency()

[ppass]

在程序开始的时候取一次CPU时间,
在结束后再取一次,2者做差,将结果按要求转换即可,默认单位是毫秒好像是.
API不太记得了.找找.

[Dinelgua]

GetTickCount

The GetTickCount function retrieves the number of milliseconds that have elapsed since the system was started. It is limited to the resolution of the system timer. To obtain the system timer resolution, use the GetSystemTimeAdjustment function.


DWORD GetTickCount(void);

Parameters
This function has no parameters.
Return Values
The return value is the number of milliseconds that have elapsed since the system was started.

[cppzhentan]

QueryPerformanceFrequency()

[flameearth]

去搜索下关于 QueryPerformanceFrequency 这个因该可以

[fairchild811]

GetTickCount

[daiya81]

可以使用C语言的函数，头文件是<ctime>
参考：
http://hi.baidu.com/yanyan2006y/blog/item/ea28b28bfa5c05799e2fb4de.html

[wangkeyunanjing]

ding

[aaaa3105563]

SetTimer(hWnd,1,1000,NULL); //定时器

[jakqigle]

[Quote=引用 9 楼 fairchild811 的回复:]
GetTickCount
[/Quote]
up!

[s79947171]

#include <iostream>
#include <ctime>
using namespace std;

int main()
{
    clock_t start = clock();//开始时间
    //运行程序.......
    clock_t end= clock();//结束时间
    int a =(end-start)/CLK_TCK;//结果为毫秒数
     cout<<a<<endl;
    return 0;
}

[china_west]

就是，time
up