Delphi 实现数字转大写

从网上找的一段代码

/// <summary>
/// 小写转大写
/// </summary>
/// <param name="mmje"></param>
/// <returns></returns>
function MoneyConvert(mmje: real): string;
const
  s1: string = '零壹贰叁肆伍陆柒捌玖';
  s2: string = '分角元拾佰仟万拾佰仟亿拾佰仟万';
  function StrTran(const S, s1, s2: string): string;
  begin
    Result := StringReplace(S, s1, s2, [rfReplaceAll]);
  end;
var
  S, dx: string;
  i, Len: Integer;
begin
  if mmje < 0 then
  begin
    dx := '负';
    mmje := -mmje;
  end;
  S := Format('%.0f', [mmje * 100]);
  Len := Length(S);
  for i := 1 to Len do
    dx := dx + Copy(s1, (Ord(S[i]) - Ord('0')) * 2 + 1, 2) + Copy(s2, (Len - i) * 2 + 1, 2);
  dx := StrTran(StrTran(StrTran(StrTran(StrTran(dx, '零仟', '零'), '零佰', '零'), '零拾', '零'), '零角', '零'), '零分', '整');
  dx := StrTran(StrTran(StrTran(StrTran(StrTran(dx, '零零', '零'), '零零', '零'), '零亿', '亿'), '零万', '万'), '零元', '元');
  if dx = '整' then
    Result := '零元整'
  else
    Result := StrTran(StrTran(dx, '亿万', '亿零'), '零整', '整');
end;