VS2008下怎么统计程序运行时间

VS2008下如何统计程序运行时间？
RT
细致一点，如何统计函数的运行时间?
要精确的。最好有微秒级。

[解决办法]
#include<iostream>
#include<windows.h>

int main()
{ int istart;
istart=GetTickCount();
// Add your Code here
.....
//
std::cout<<GetTickCount()-istart<<" ms";
return 0;
}
[解决办法]

C/C++ code

LARGE_INTEGER begintime;void TimeStart(){    QueryPerformanceCounter(&begintime);}void TimeDisplay(){    LARGE_INTEGER endtime,freqtime,resulttime;    QueryPerformanceCounter(&endtime);    QueryPerformanceFrequency(&freqtime);    resulttime.QuadPart = (endtime.QuadPart - begintime.QuadPart) * 1000 / freqtime.QuadPart;    printf("处理时间：%5I64d小时%I64d分%I64d.%03I64d秒",resulttime.QuadPart / 3600000,(resulttime.QuadPart / 60000) % 60,(resulttime.QuadPart /1000) % 60,resulttime.QuadPart % 1000);}