📄 unit1.pas
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unit Unit1;
interface
uses
Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
Dialogs, StdCtrls;
type
TForm1 = class(TForm)
Edit1: TEdit;
Button1: TButton;
Button2: TButton;
Button3: TButton;
Button4: TButton;
Button5: TButton;
Button6: TButton;
Button7: TButton;
Button8: TButton;
Button9: TButton;
Button10: TButton;
Button11: TButton;
Button12: TButton;
Button13: TButton;
Button14: TButton;
procedure Button1Click(Sender: TObject);
procedure Button2Click(Sender: TObject);
procedure Button3Click(Sender: TObject);
procedure Button4Click(Sender: TObject);
procedure Button7Click(Sender: TObject);
procedure Button8Click(Sender: TObject);
procedure Button10Click(Sender: TObject);
procedure Button11Click(Sender: TObject);
procedure Button12Click(Sender: TObject);
procedure Button5Click(Sender: TObject);
procedure Button9Click(Sender: TObject);
procedure Button6Click(Sender: TObject);
procedure Button13Click(Sender: TObject);
procedure Button14Click(Sender: TObject);
private
{ Private declarations }
public
{ Public declarations }
end;
var
Form1: TForm1;
S : Integer;
implementation
{$R *.dfm}
procedure TForm1.Button1Click(Sender: TObject);
begin
Edit1.text:=Edit1.Text+'1';
end;
procedure TForm1.Button2Click(Sender: TObject);
begin
Edit1.text:=Edit1.text+'2';
end;
procedure TForm1.Button3Click(Sender: TObject);
begin
Edit1.text:=Edit1.text+'3';
end;
procedure TForm1.Button4Click(Sender: TObject);
begin
Edit1.text:=Edit1.text+'4';
end;
procedure TForm1.Button7Click(Sender: TObject);
begin
Edit1.text:=Edit1.text+'5';
end;
procedure TForm1.Button8Click(Sender: TObject);
begin
Edit1.text:=Edit1.text+'6';
end;
procedure TForm1.Button10Click(Sender: TObject);
begin
Edit1.text:=Edit1.text+'7';
end;
procedure TForm1.Button11Click(Sender: TObject);
begin
Edit1.text:=Edit1.text+'8';
end;
procedure TForm1.Button12Click(Sender: TObject);
begin
Edit1.Text:=Edit1.Text +'9';
end;
procedure TForm1.Button5Click(Sender: TObject);
begin
Edit1.Text:=Edit1.text+'0';
end;
procedure TForm1.Button9Click(Sender: TObject);
begin
S:=StrToInt(Edit1.text);
Edit1.Text :='';
button14.Enabled:=false;
end;
procedure TForm1.Button6Click(Sender: TObject);
begin
if button14.Enabled = false then
Edit1.Text:=IntToStr(StrToInt(Edit1.Text )+S)
else
Edit1.Text:=IntToStr(S-StrToInt(Edit1.Text ));
end;
procedure TForm1.Button13Click(Sender: TObject);
begin
Edit1.Text:='';
s:=0;
button9.Enabled := true;
button14.Enabled := true;
end;
procedure TForm1.Button14Click(Sender: TObject);
begin
S:=StrToInt(Edit1.text);
Edit1.Text :='';
button9.Enabled:=false;
end;
end.
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