Jumat, 13 Agustus 2010

APLIKASI PROGRAM KALKULATOR DENGAN DELPHI

Dengan delphi, qita juga bisa buat program kalkulator loh....
caranya seperti apa ya...?

yang pertama qita lakukan, buat form seperti ini dulu:


kemudian tulis kode sebagai berikut:
unit Unit1;

interface

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

type
TForm1 = class(TForm)
Label1: TLabel;
GroupBox1: TGroupBox;
Label2: TLabel;
Label3: TLabel;
Label4: TLabel;
Edit1: TEdit;
Edit2: TEdit;
Edit3: TEdit;
GroupBox2: TGroupBox;
Label5: TLabel;
Button1: TButton;
Button2: TButton;
Button3: TButton;
Button4: TButton;
Button7: TButton;
Button8: TButton;
Button5: TButton;
procedure Button1Click(Sender: TObject);
procedure Button2Click(Sender: TObject);
procedure Button3Click(Sender: TObject);
procedure Button4Click(Sender: TObject);
procedure Button5Click(Sender: TObject);
private
{ Private declarations }
public
{ Public declarations }
end;

var
Form1: TForm1;
var A, B, X, P, T, K : Real;
implementation

{$R *.dfm}

procedure TForm1.Button1Click(Sender: TObject);
begin
A := StrToFloat (Edit1.Text);
B := StrToFloat (Edit2.Text);
X := A * B;
Edit3.Text:= FloatToStr(X);
end;

procedure TForm1.Button2Click(Sender: TObject);
begin
A := StrToFloat (Edit1.Text);
B := StrToFloat (Edit2.Text);
P := A / B;
Edit3.Text:= FloatToStr(P);
end;

procedure TForm1.Button3Click(Sender: TObject);
begin
A := StrToFloat (Edit1.Text);
B := StrToFloat (Edit2.Text);
T := A + B;
Edit3.Text:= FloatToStr(T);
end;

procedure TForm1.Button4Click(Sender: TObject);
begin
A := StrToFloat (Edit1.Text);
B := StrToFloat (Edit2.Text);
K := A - B;
Edit3.Text:= FloatToStr(K);
end;

procedure TForm1.Button5Click(Sender: TObject);
begin
Close;
end;

end.

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