unit Unit1;

interface

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

type
  TForm1 = class(TForm)
    Button1: TButton;
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form1: TForm1;

function blaat(woo: Integer): String; overload
function blaat(woo: String): String; overload;

implementation

{$R *.dfm}

function blaat(woo: Integer): String;
begin
  Str(woo, Result);
end;

function blaat(woo: String): String;
begin
  Result := blaat(20);
end;

end.