C / C++ / MFC

struct b 
{ 

     b() 
     { 

     } 

     b(int p1) 
     { 
     m_p1=p1; 
     } 

     int m_p1; 
};

typedef struct 
{ 

	a() 
	{ 

	} 

	a(int p1) 
	{ 
		m_p1=p1; 
	} 

	int m_p1; 
}a; 

CRect rect(0, 0, 100, 100);
CBitmap bmpCap;
CBitmap *pBmpOld = NULL;
CWnd* pWnd = GetDlgItem(IDC_SUCN_CHART);
pWnd->GetWindowRect(&rect);
ScreenToClient(rect);

CDC* pdcScreen = pWnd->GetDC();
CDC memDC;

BOOL bResult = memDC.CreateCompatibleDC(pdcScreen);
bResult = bmpCap.CreateCompatibleBitmap(pdcScreen, rect.Width(), rect.Height());
BITMAP bm;
bmpCap.GetBitmap(&bm);  // Check bits/pixel is OK
pBmpOld = memDC.SelectObject(&bmpCap);
bResult = memDC.BitBlt( 0, 0, rect.Width(), rect.Height(), pdcScreen, rect.left, rect.top, SRCCOPY );

BYTE image1[ImageSize];
BYTE image2[ImageSize];
// load the images not shown

if( memcmp(image1,image2,sizeof(image1)) == 0)
   // they are the same
else
   // they are different

// SieveOfErathostenes.cpp : main project file.

#include "stdafx.h"
#include <bitset>
#include <iostream>
#include <ctime>

using namespace System;

int main(array<System::String ^> ^args)
{
    const int N = 2000000;
    clock_t cstart = clock();

    bitset<N + 1> b;
    int count = 0;
    int i;
    for (i = 2; i <= N; i++)
        b.set(i);
    i = 2;

    while (i * i <= N)
    {
        if (b.test(i))
        {
            count++;
            int k = 2 * i;
            while (k <= N)
            {
                b.reset(k);
                k += i;
            }
        }
        i++;
    }

    while (i <= N)
    {
        if (b.test(i))  count++;
        i++;
    }

    clock_t cend = clock();
    double millis = 1000.0 * (cend - cstart) / CLOCKS_PER_SEC;

    cout << count << " primes \n" << millis << " milliseconds\n";

    return 0;
}