Нужно переписать во вложенной л/р цикл while на do while и for

// Lab4View.cpp : implementation of the CLab4View class
//
 
#include "stdafx.h"
#include "Lab4.h"
#include "Dialog1.h"
#include "Lab4Doc.h"
#include "Lab4View.h"
 
#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif
 
/////////////////////////////////////////////////////////////////////////////
// CLab4View
 
IMPLEMENT_DYNCREATE(CLab4View, CView)
 
BEGIN_MESSAGE_MAP(CLab4View, CView)
    //{{AFX_MSG_MAP(CLab4View)
        // NOTE - the ClassWizard will add and remove mapping macros here.
        //    DO NOT EDIT what you see in these blocks of generated code!
    //}}AFX_MSG_MAP
    // Standard printing commands
    ON_COMMAND(ID_FILE_PRINT, CView::OnFilePrint)
    ON_COMMAND(ID_FILE_PRINT_DIRECT, CView::OnFilePrint)
    ON_COMMAND(ID_FILE_PRINT_PREVIEW, CView::OnFilePrintPreview)
END_MESSAGE_MAP()
 
/////////////////////////////////////////////////////////////////////////////
// CLab4View construction/destruction
 
CLab4View::CLab4View()
{
    // TODO: add construction code here
 
}
 
CLab4View::~CLab4View()
{
}
 
BOOL CLab4View::PreCreateWindow(CREATESTRUCT& cs)
{
    // TODO: Modify the Window class or styles here by modifying
    //  the CREATESTRUCT cs
 
    return CView::PreCreateWindow(cs);
}
 
/////////////////////////////////////////////////////////////////////////////
// CLab4View drawing
 
void CLab4View::OnDraw(CDC* pDC)
{
    CLab4Doc* pDoc = GetDocument();
    ASSERT_VALID(pDoc);
    {CClientDC dc(this);
    int v=100,p=100,u=100;
        CPen pen(PS_DOT,5,RGB(v,p,u));
    dc.SelectObject(&pen);
    dc.MoveTo(400,400);
    dc.LineTo(1000,400);
    dc.MoveTo(500,0);
    dc.LineTo(500,800);
    dc.MoveTo(500,400);
    int q=400/130;
    pDC->TextOut(10,10,pDoc->m_string);
    CDialog1 pc;
    CString s;
    if (pc.DoModal()==IDOK)
    {
    s.Format ("x=%g y=%g z=%g",pc.m_x,pc.m_y,pc.m_z);
    pDC->TextOut(20,40,s);
    pDC->TextOut(20,70,pDoc-> m_string2);
    pDC->TextOut(20,90,"   x         w    ");
    double w;
    double i;
    int L=110;
    const double a=2.1,b=1.8,d=-20.5;i=pc.m_x;
while ( i<=pc.m_y)
    {if (i<=4) { w=(a/i)+b*i+d;pDC->SetBkColor(RGB(0,255,0));}
     if ((i>4)&&(i<6)) { w=i;pDC->SetBkColor(RGB(0,0,255));}
    if ((i>6)&&(i<=12)){w=a*i+b*i;pDC->SetBkColor(RGB(255,0,0));}
  
     s.Format ("%g          %g",i,w);
    pDC->TextOut(20,L,s);L+=25;
    if (i<=4) {v=0;p=255;u=0;}
     if ((i>4)&&(i<6)) {v=0;p=0;u=255;}
     if ((i>6)&&(i<=12)) {v=255;p=0;u=0;}
    CPen pen(PS_DOT,5,RGB(v,p,u));
     dc.SelectObject(&pen);
     dc.LineTo(500+(int(i)*10),400-(int(w*q)));
     i+=pc.m_z;
 
    }}}
 
 
    // TODO: add draw code for native data here
}
 
/////////////////////////////////////////////////////////////////////////////
// CLab4View printing
 
BOOL CLab4View::OnPreparePrinting(CPrintInfo* pInfo)
{
    // default preparation
    return DoPreparePrinting(pInfo);
}
 
void CLab4View::OnBeginPrinting(CDC* /*pDC*/, CPrintInfo* /*pInfo*/)
{
    // TODO: add extra initialization before printing
}
 
void CLab4View::OnEndPrinting(CDC* /*pDC*/, CPrintInfo* /*pInfo*/)
{
    // TODO: add cleanup after printing
}
 
/////////////////////////////////////////////////////////////////////////////
// CLab4View diagnostics
 
#ifdef _DEBUG
void CLab4View::AssertValid() const
{
    CView::AssertValid();
}
 
void CLab4View::Dump(CDumpContext& dc) const
{
    CView::Dump(dc);
}
 
CLab4Doc* CLab4View::GetDocument() // non-debug version is inline
{
    ASSERT(m_pDocument->IsKindOf(RUNTIME_CLASS(CLab4Doc)));
    return (CLab4Doc*)m_pDocument;
}
#endif //_DEBUG
 
/////////////////////////////////////////////////////////////////////////////
// CLab4View message handlers