unit coder;

interface

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

type
  TCryptographer = class(TForm)
    cleartext: TEdit;
    crypttext: TEdit;
    offset: TSpinEdit;
    Label1: TLabel;
    Label2: TLabel;
    Label3: TLabel;
    encrypt: TButton;
    done: TButton;
    procedure doneClick(Sender: TObject);
    procedure encryptClick(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Cryptographer: TCryptographer;

implementation

{$R *.DFM}

procedure TCryptographer.doneClick(Sender: TObject);
begin
  close
end;

procedure TCryptographer.encryptClick(Sender: TObject);
var counter : byte;
begin
  crypttext.text := '';
  for counter := 1 to length(cleartext.text) do
     crypttext.text := crypttext.text + char(ord(cleartext.text[counter]) + offset.value)
end;

end.