Write a program that displays the name of your favorite hero

The program is written in the Delphi language. The program displays an inscription on the screen, your favorite movie hero, after pressing the enter button. Fitted into a text box.

Button1: TButton;
Edit1: TEdit;
Label1: TLabel;
procedure Button1Click (Sender: TObject);

private

public

end;

var
Form1: TForm1;
r, a: string;

implementation
{$ R * .dfm}
procedure TForm1.Button1Click (Sender: TObject);
begin
a: = Edit1.Text;
r: = ‘my favorite hero’;
r: = r + a;
Label1.caption: = r;

end;
end.