Contoh Program Kalkulator Sederhana pada Delphi

Berikut ini akan saya bagikan source code untuk membuat program Kalkulator Sederhana pada Delphi.
Source Codenya :


unit KalkulatorBiasa;

interface

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

type
  TForm1 = class(TForm)
    Label1: TLabel;
    Edit1: TEdit;
    Label2: TLabel;
    Edit2: TEdit;
    Label3: TLabel;
    Edit3: TEdit;
    Button1: TButton;
    Button2: TButton;
    Button3: TButton;
    Button4: TButton;
    Button5: TButton;
    Button6: TButton;
    Button7: TButton;
    Button8: TButton;
    procedure Button4Click(Sender: TObject);
    procedure Button8Click(Sender: TObject);
    procedure Button7Click(Sender: TObject);
    procedure Button3Click(Sender: TObject);
    procedure Button2Click(Sender: TObject);
    procedure Button1Click(Sender: TObject);
    procedure Button5Click(Sender: TObject);
    procedure Button6Click(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form1: TForm1;

implementation

{$R *.dfm}

procedure TForm1.Button4Click(Sender: TObject);
var nilai:integer;
begin
nilai:=strtoint(edit1.text)+strtoint(edit2.Text);
edit3.text:=inttostr(nilai);
end;

procedure TForm1.Button8Click(Sender: TObject);
begin
close;
end;

procedure TForm1.Button7Click(Sender: TObject);
begin
edit1.Text:=' ';
edit2.text:=' ';
edit3.text:=' ';
end;

procedure TForm1.Button3Click(Sender: TObject);

var nilai:integer;
begin
nilai:=strtoint(edit1.text)-strtoint(edit2.Text);
edit3.text:=inttostr(nilai);
end;

procedure TForm1.Button2Click(Sender: TObject);

var nilai:integer;
begin
nilai:=strtoint(edit1.text)*strtoint(edit2.Text);
edit3.text:=inttostr(nilai);
end;

procedure TForm1.Button1Click(Sender: TObject);

var nilai:real;
begin
nilai:=strtofloat(edit1.text)/strtofloat(edit2.Text);
edit3.text:=floattostr(nilai);
end;

procedure TForm1.Button5Click(Sender: TObject);

var nilai:integer;
begin
nilai:=strtoint(edit1.text) div strtoint(edit2.Text);
edit3.text:=inttostr(nilai);
end;

procedure TForm1.Button6Click(Sender: TObject);

var nilai:integer;
begin
nilai:=strtoint(edit1.text) mod strtoint(edit2.Text);
edit3.text:=inttostr(nilai);
end;

end.




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