最精简的小写金额转大写的函数

unit Unit1;

interface

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

type
TForm1 = class(TForm)
Button1: TButton;
Edit1: TEdit;
Edit2: TEdit;
procedure Button1Click(Sender: TObject);
private
{ Private declarations }
public
{ Public declarations }
end;

var
Form1: TForm1;

implementation

{$R *.dfm}

//方法一
function NumToChar(const n: Real): string;   //可以到万亿，并且可以随便扩大范围
const cNum: WideString = '零壹贰叁肆伍陆柒捌玖--万仟佰拾亿仟佰拾万仟佰拾元角分';
cCha:array[0..1, 0..12]of string =
(( '零元','零拾','零佰','零仟','零万','零亿','亿万','零零零','零零','零万','零亿','亿万','零元'),
( '元','零','零','零','万','亿','亿','零','零','万','亿','亿','元'));
var i : Integer;
sNum,sTemp : WideString;
begin
result :='';
sNum := format('%15d',[round(n * 100)]);
for i := 0 to 14 do
begin
stemp := copy(snum,i+1,1);
if stemp=' ' then continue
else result := result + cNum[strtoint(stemp)+1] + cNum[i+13];
end;
for i:= 0 to 12 do
Result := StringReplace(Result, cCha[0,i], cCha[1,i], [rfReplaceAll]);
if pos('零分',result)=0
then Result := StringReplace(Result, '零角', '零', [rfReplaceAll])
else Result := StringReplace(Result, '零角','整', [rfReplaceAll]);
Result := StringReplace(Result, '零分','', [rfReplaceAll]);
end;

//方法二
function Changdx2(mmje: Double): 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;

procedure TForm1.Button1Click(Sender: TObject);
begin
ShowMessage(NumToChar(StrToInt(Edit1.text)));
ShowMessage(Changdx2(StrToInt(Edit2.Text)));
end;

end.