Contoh Program Delphi

unit Unit1;

interface

uses

  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,

  Dialogs, StdCtrls;

type

  TForm1 = class(TForm)

    GroupBox1: TGroupBox;

    Label1: TLabel;

    Label2: TLabel;

    Edit1: TEdit;

    Edit2: TEdit;

    Memo1: TMemo;

    Button1: TButton;

    Button2: TButton;

    Button3: TButton;

    procedure Button1Click(Sender: TObject);

    procedure Button2Click(Sender: TObject);

    procedure Button3Click(Sender: TObject);

  private

    { Private declarations }

  public

    { Public declarations }

  end;

var

  Form1: TForm1;

implementation

{$R *.dfm}

procedure TForm1.Button1Click(Sender: TObject);

var

E,F : integer;

begin

Memo1.clear;

E:= strtoint (edit1.Text);

F:=1;

while F <> strtoint (edit2.Text) do

begin

Memo1.Lines.add ('Perulangan ke-'+ inttostr(F)+ '=' + inttostr (E));

E := E+1;

F := F+1;

end;

end;

procedure TForm1.Button2Click(Sender: TObject);

var

E, F : integer;

begin

Memo1.Clear;

E:= strtoint (edit1.Text);

for F:= 1 to strtoint (edit2.Text) do

begin

Memo1.Lines.add (' Perulangan ke-'+ inttostr (F)+ '='+ inttostr (E));

E:= E+1;

end;

end;

procedure TForm1.Button3Click(Sender: TObject);

var

E, F , A : integer;

begin

Memo1.Clear;

E:= strtoint (edit1.Text);

for f := E to strtoint (edit2.text) do

begin

A:= sqr (F);

Memo1.lines.Add ( inttostr (F) + 'Kuadrat'+ '='+ inttostr (A));

end; 

end;

end.