Програма для графического отображения графика

//---------------------------------------------------------------------------
#include <vcl.h>
#pragma hdrstop
 
#include "Unit1.h"
#include "math.h"
//---------------------------------------------------------------------------
#pragma package(smart_init)
#pragma resource "*.dfm"
TForm1 *Form1;
//---------------------------------------------------------------------------
__fastcall TForm1::TForm1(TComponent* Owner)
        : TForm(Owner)
{
}
//---------------------------------------------------------------------------
void __fastcall TForm1::FormCreate(TObject *Sender)
{
BitBtn1->Caption = "Построить";
Memo1->ScrollBars = ssVertical;
}
//---------------------------------------------------------------------------
void __fastcall TForm1::BitBtn1Click(TObject *Sender)
{
Memo1->Clear();
float xt,x,y;
int A=StrToInt(Edit1->Text);
int B=StrToInt(Edit2->Text);
int W=StrToInt(Edit4->Text);
int W0=StrToInt(Edit3->Text);
y=0;
for (x=W0;x<=W;x++)
 {
 xt=x/3,14;
 y=(x*x)+A;
 Series1->AddXY(x,y,"",clRed);
 Memo1->Lines->Add("x= "+FloatToStr(xt)+"\ty= "+FloatToStr(y));
 }
}
//---------------------------------------------------------------------------