jstime.cpp

来自「大数相乘、计算时间、josep问题、计算JC、分形图形」· C++ 代码 · 共 38 行

#include "stdafx.h" 
#include <afxtempl.h> 
#include "iostream" 
using namespace std; 
const int ROW=300; 
const int COL=500; 
typedef CArray<double, double&> CDoubleArray; 
typedef CArray<CDoubleArray, CDoubleArray&> C2dDoubleArray; 
int main(int argc, char* argv[]) 
{ 
        int i; 
        C2dDoubleArray arrData; 
        arrData.SetSize(ROW); 
        for(i=0; i<=arrData.GetUpperBound(); i++) 
        { 
                arrData[i].SetSize(COL); 
        } 
        DWORD dwStart=GetTickCount(); 
        for(i=0; i<1e8; i++) 
        { 
                int nRow=i%ROW; 
                int nCol=i%COL; 
                double d=arrData[nRow][nCol]; 
        } 
        cout<<GetTickCount()-dwStart<<endl; 
        dwStart=GetTickCount(); 
        double d=10.0; 
        for(i=0; i<1e8; i++) 
        { 
                int nRow=i%ROW; 
                int nCol=i%COL; 
                arrData[nRow][nCol]=d; 
        } 
        cout<<GetTickCount()-dwStart<<endl; 
        flush(cout); 
        cin>>i; 
        return 0; 
}