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#include <windows.h>
#include <iostream>
using namespace std;
void main()
{
LARGE_INTEGER liFreq;
QueryPerformanceFrequency( &liFreq );
double secondsPerTick = 1.0 / liFreq.QuadPart;
for ( size_t i = 0; i < 10; ++i )
{
LARGE_INTEGER liCnt;
QueryPerformanceCounter( &liCnt );
// 计算循环一次的时间
cout << fixed << liCnt.QuadPart*1.0/liFreq.QuadPart<<endl;
}
}
#include<time.h>
#include<stdio.h>
int main()
{
clock_t t=clock();
printf("%d毫秒\n",clock()-t);
return 0;
}