数字转换为字符串

procedure TMainForm.InputChange(Sender: TObject);
var
  I: Integer;
  S, Number: string;
begin
  Output.Text := '';
  S := Input.Text;
  if CheckBox.Checked then
  begin
    Number := '';
    for I := 1 to Length(S) do
    begin
      if S[I] = '#' then
      begin
        if Number <> '' then
        begin
          Output.Text := Output.Text + Char(StrToInt(Number));
          Number := '';
        end;
      end
      else
      begin
        if S[I] in ['0'..'9'] then
          Number := Number + S[I];
      end;
    end;
    if Number <> '' then
      Output.Text := Output.Text + Char(StrToInt(Number));
  end
  else
  begin
    for I := 1 to Length(s) do
    begin
      Output.Text := Output.Text + '#' + IntToStr(Ord(s[I]));
    end;
  end;
end;