program perhitungan kuadrat

unit Unit1;

interface

uses
  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
  Dialogs, StdCtrls, ExtCtrls;

type
  TForm1 = class(TForm)
    Edit1: TEdit;
    Edit2: TEdit;
    Edit3: TEdit;
    Label1: TLabel;
    Label2: TLabel;
    Label3: TLabel;
    Button1: TButton;
    Button2: TButton;
    Button3: TButton;
    Panel1: TPanel;
    procedure Button1Click(Sender: TObject);
    procedure Button2Click(Sender: TObject);
    procedure Button3Click(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form1: TForm1;
  x,y:Real;
implementation

{$R *.dfm}

procedure TForm1.Button1Click(Sender: TObject);
begin
x:=StrToFloat(edit1.Text);
y:=StrToFloat(edit2.Text);
if (x>=0) and (y>=0)
then
begin
Edit3.text:='KUADRAN 1';
end else
if (x>=0) and (y<0)
then
begin
edit3.text:='KUADRAN 2';
end else
if (x<0) and (y<0) then
begin
edit3.text:='KUADRAN 3';
end else
edit3.Text:='KUADRAN 4';
end;

procedure TForm1.Button2Click(Sender: TObject);
begin
Edit1.Clear;
Edit2.Clear;
Edit3.Clear;
end;

procedure TForm1.Button3Click(Sender: TObject);
begin
close;
end;

end.

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