[viv]

كود :

unit Unit1;

interface

uses
 Winapi.Windows, Winapi.Messages, System.SysUtils, System.Variants, System.Classes, Vcl.Graphics,
 Vcl.Controls, Vcl.Forms, Vcl.Dialogs, Vcl.StdCtrls;

type
 TForm1 = class(TForm)
   Button1: TButton;
   Button2: TButton;
   Label1: TLabel;
   Label2: TLabel;
   Label3: TLabel;
   Label4: TLabel;
   Edit1: TEdit;
   Edit2: TEdit;
   Edit3: TEdit;
   Edit4: TEdit;
   Button3: TButton;
   Button4: TButton;
   Button5: TButton;
   Button6: TButton;
   Button7: TButton;
   Button8: TButton;
   Button9: TButton;
   Button10: TButton;
   Button11: TButton;
   Button12: TButton;
   Button13: TButton;
   Button14: TButton;
   Button15: TButton;
   Button16: TButton;
   procedure Button15Click(Sender: TObject);
   procedure Button1Click(Sender: TObject);
   procedure Button2Click(Sender: TObject);
   procedure Button3Click(Sender: TObject);
   procedure Button4Click(Sender: TObject);
   procedure Button5Click(Sender: TObject);
   procedure Button6Click(Sender: TObject);
   procedure Button7Click(Sender: TObject);
   procedure Button8Click(Sender: TObject);
   procedure Button9Click(Sender: TObject);
   procedure Button10Click(Sender: TObject);
   procedure Button11Click(Sender: TObject);
   procedure Button12Click(Sender: TObject);
   procedure Button13Click(Sender: TObject);
   procedure Button14Click(Sender: TObject);
   procedure Button16Click(Sender: TObject);
   procedure FormCreate(Sender: TObject);
 private
   { Private declarations }
 public
   { Public declarations }
 end;

var
 Form1: TForm1;
 a:Double;
 b:Double;
 c:Double;

implementation

{$R *.dfm}

procedure TForm1.Button10Click(Sender: TObject);
begin
 if Edit3.Text = '' then
   Edit1.Text:=Edit1.Text + '0'
   else
   begin
     Edit2.Text:=Edit2.Text + '0'
   end;
end;

procedure TForm1.Button11Click(Sender: TObject);
begin
 Edit3.Text:='+';
end;

procedure TForm1.Button12Click(Sender: TObject);
begin
 Edit3.Text:='-';
end;

procedure TForm1.Button13Click(Sender: TObject);
begin
 Edit3.Text:='x';
end;

procedure TForm1.Button14Click(Sender: TObject);
begin
 Edit3.Text:='/';
end;

procedure TForm1.Button15Click(Sender: TObject);
begin
Edit1.Text:='';
Edit2.Text:='';
Edit3.Text:='';
Edit4.Text:='';

end;

procedure TForm1.Button16Click(Sender: TObject);
begin
 if Edit3.Text ='+' then
   a:=StrToInt(Edit1.Text);
   b:=StrToInt(Edit2.Text);
   c:=a+b;
   Edit4.Text:=FloatToStr(c);

 if Edit3.Text ='-' then
   a:=StrToInt(Edit1.Text);
   b:=StrToInt(Edit2.Text);
   c:=a-b;
   Edit4.Text:=FloatToStr(c);

  if Edit3.Text ='*' then
   a:=StrToInt(Edit1.Text);
   b:=StrToInt(Edit2.Text);
   c:=a*b;
   Edit4.Text:=FloatToStr(c);

 if Edit3.Text ='/' then
   a:=StrToFloat(Edit1.Text);
   b:=StrToFloat(Edit2.Text);
   c:=(a)/(b);
   Edit4.Text:=FloatToStr(c)


end;

procedure TForm1.Button1Click(Sender: TObject);
begin
 if Edit3.Text = '' then
   Edit1.Text:=Edit1.Text + '1'
   else
   begin
     Edit2.Text:=Edit2.Text + '1'
   end;

end;

procedure TForm1.Button2Click(Sender: TObject);
begin
 if Edit3.Text = '' then
   Edit1.Text:=Edit1.Text + '2'
   else
   begin
     Edit2.Text:=Edit2.Text + '2'
   end;
end;

procedure TForm1.Button3Click(Sender: TObject);
begin
 if Edit3.Text = '' then
   Edit1.Text:=Edit1.Text + '3'
   else
   begin
     Edit2.Text:=Edit2.Text + '3'
   end;
end;

procedure TForm1.Button4Click(Sender: TObject);
begin
 if Edit3.Text = '' then
   Edit1.Text:=Edit1.Text + '4'
   else
   begin
     Edit2.Text:=Edit2.Text + '4'
   end;
end;

procedure TForm1.Button5Click(Sender: TObject);
begin
 if Edit3.Text = '' then
   Edit1.Text:=Edit1.Text + '5'
   else
   begin
     Edit2.Text:=Edit2.Text + '5'
   end;
end;

procedure TForm1.Button6Click(Sender: TObject);
begin
 if Edit3.Text = '' then
   Edit1.Text:=Edit1.Text + '6'
   else
   begin
     Edit2.Text:=Edit2.Text + '6'
   end;
end;

procedure TForm1.Button7Click(Sender: TObject);
begin
 if Edit3.Text = '' then
   Edit1.Text:=Edit1.Text + '7'
   else
   begin
     Edit2.Text:=Edit2.Text + '7'
   end;
end;

procedure TForm1.Button8Click(Sender: TObject);
begin
 if Edit3.Text = '' then
   Edit1.Text:=Edit1.Text + '8'
   else
   begin
     Edit2.Text:=Edit2.Text + '8'
   end;
end;

procedure TForm1.Button9Click(Sender: TObject);
begin
 if Edit3.Text = '' then
   Edit1.Text:=Edit1.Text + '9'
   else
   begin
     Edit2.Text:=Edit2.Text + '9'
   end;
end;

procedure TForm1.FormCreate(Sender: TObject);
begin
 Form1.Text:='DELPHI CALCULATOR By: Teody';
 Form1.Position:=poMainFormCenter;
end;

end.