CHIFFRE ARABE --> CHIFFRE ROMAIN

unit Unit1;

interface

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

type
  TForm1 = class(TForm)
    GroupBox2: TGroupBox;
    Edit2: TEdit;
    GroupBox3: TGroupBox;
    Edit3: TEdit;
    procedure Edit3Change(Sender: TObject);
    procedure Edit3KeyPress(Sender: TObject; var Key: Char);
  private
    { Déclarations privées }
  public
    { Déclarations publiques }
  end;
const
romains: array[1..7] of char=('I','V','X','L','C','D','M');
var
  Form1: TForm1;
implementation

{$R *.DFM}

procedure TForm1.Edit3Change(Sender: TObject);
var i,k:integer;
begin
if strtoint(edit3.text)<4000 then
BEGIN
edit2.text:='';
for i:=1 to length(edit3.text) do
  begin
    k:=2*(length(edit3.text)-i)+1;
    Case edit3.text[i] of
    '1':edit2.text := edit2.text+romains[k];
    '2':edit2.text := edit2.text+romains[k]+romains[k];
    '3':edit2.text := edit2.text+romains[k]+romains[k]+romains[k];
    '4':edit2.text := edit2.text+romains[k]+romains[k+1];
    '5':edit2.text := edit2.text+romains[k+1];
    '6':edit2.text := edit2.text+romains[k+1]+romains[k];
    '7':edit2.text := edit2.text+romains[k+1]+romains[k]+romains[k];
    '8':edit2.text := edit2.text+romains[k+1]+romains[k]+romains[k]+romains[k];
    '9':edit2.text := edit2.text+romains[k]+romains[k+2];
    end;
  end;
 end;
end;

procedure TForm1.Edit3KeyPress(Sender: TObject; var Key: Char);
begin
if not(Key in ['0'..'9', #8]) then
key:=#0;
end;

end.