Membuat Kalkulator Sederhana Menggunakan Delphi6

Membuat Kalkulator Sederhana Menggunakan Delphi6

 

Codingan :

unit Unit1;

interface

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

type
  TForm1 = class(TForm)
    Label1: TLabel;
    Label2: TLabel;
    Label3: TLabel;
    Edit1: TEdit;
    Edit2: TEdit;
    Button1: TButton;
    Label4: TLabel;
    Edit3: TEdit;
    Button2: TButton;
    Button3: TButton;
    RadioGroup1: TRadioGroup;
    procedure FormCreate(Sender: TObject);
    procedure Button2Click(Sender: TObject);
    procedure Button3Click(Sender: TObject);
    procedure Button1Click(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
    a,b : integer;
  end;

var
  Form1: TForm1;

implementation

{$R *.dfm}

procedure TForm1.FormCreate(Sender: TObject);
begin
Edit1.Text:='';
Edit2.Text:='';
Edit3.Text:='';
end;

procedure TForm1.Button2Click(Sender: TObject);
begin
Edit1.Text:='';
Edit2.Text:='';
Edit3.Text:='';
end;

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

procedure TForm1.Button1Click(Sender: TObject);
begin
 a := StrToInt(Edit1.Text);
 b := StrToInt(Edit2.Text);

 if RadioGroup1.ItemIndex = 0 then
 begin
    Edit3.Text := IntToStr(a+b);
 end
 else
 if RadioGroup1.ItemIndex = 1 then
 Begin
      edit3.Text := IntToStr(a-b);
 end
 else
if RadioGroup1.ItemIndex = 2 then
Begin
        Edit3.Text := FloatToStr(a/b);
end
else
If RadioGroup1.ItemIndex = 3 then
Begin
        Edit3.Text := IntToStr(a*b);
end;

end;
end.