<pre id=\"best-answer-content\" class=\"reply-text mb10\">procedure TForm1.Button1Click(Sender: TObject);
var
i,iCode: Integer;
s: String;
b: Boolean;
begin
s := Trim(Edit1.Text);
Edit2.Text := \'\';
Edit3.Text := \'\';
Edit4.Text := \'\';
b := False;
for i := 1 to Length(s) do begin