用VB把数字转成中文字符串

根据数字的读法，写了一个把数字转成中文字符串的程序
参数一为数字
参数二为是不是反回人民币大写
参数三为是不是直接读数字，否则带有十百等单位
参数四为设置小数点后面的位数，默认为4
使用方法是
t=GetChinaNum(20005.000436, , , 7)'返回 “二千零五点零零零四三六”
t=GetChinaNum(2005.436, True, , 7)'返回“贰仟零伍元肆角肆分”
t=GetChinaNum(2005.436, , True, 7)'返加“二零零五点四三六”

下面是程序代码

Function GetChinaNum(otherNum As Double, Optional isRMB As Boolean, Optional numOption As Boolean, Optional dotNum As Integer) As String
    On Error Resume Next
    num = Trim(Str(Int(otherNum)))
   
    If isRMB Then
        numwei = "拾佰仟万拾佰仟亿拾佰仟"
        numshu = "零壹贰叁肆伍陆柒捌玖拾"
    Else
        numwei = "十百千万十百千亿十百千"
        numshu = "零一二三四五六七八九十"
    End If
    If otherNum < 20 And otherNum >= 10 Then
        num = Right(num, 1)
        GetChinaNum = Left(numwei, 1)
    End If
    For i = 1 To Len(num)
        bstr = Mid(num, i, 1)
        If numOption Then
            GetChinaNum = GetChinaNum + Mid(numshu, Val(bstr) + 1, 1)
           
        Else
            GetChinaNum = GetChinaNum + Mid(numshu, Val(bstr) + 1, 1)
            If bstr = "0" Then
                If Mid(numwei, Len(num) - i, 1) = "万" Or Mid(numwei, Len(num) - i, 1) = "亿" Then
                    Do While Right(GetChinaNum, 1) = "零"
                        GetChinaNum = Left(GetChinaNum, Len(GetChinaNum) - 1)
                    Loop
                    GetChinaNum = GetChinaNum + Mid(numwei, Len(num) - i, 1)
                End If
               
            Else

                GetChinaNum = GetChinaNum + Mid(numwei, Len(num) - i, 1)
            End If
            GetChinaNum = Replace(GetChinaNum, "零零", "零")
        End If
    Next i
    If numOption = False Then
        Do While Right(GetChinaNum, 1) = "零"
            GetChinaNum = Left(GetChinaNum, Len(GetChinaNum) - 1)
        Loop
    End If
    If isRMB Then
        numrmb = "元角分"
        GetChinaNum = GetChinaNum + Mid(numrmb, 1, 1)
        If Val(num) <> otherNum Then
            num = Trim(Str(Round(otherNum - Val(num), 2)))
            For i = 2 To Len(num)
                bstr = Mid(num, i, 1)
                GetChinaNum = GetChinaNum + Mid(numshu, Val(bstr) + 1, 1) + Mid(numrmb, i, 1)
            Next i
        Else
            GetChinaNum = GetChinaNum + "整"
        End If
    Else
        If Val(num) <> otherNum Then
            If dotNum = 0 Then dotNum = 4
            num = Trim(CStr(Round(otherNum - Val(num), dotNum)))
            If GetChinaNum = "" Then GetChinaNum = "零"
            GetChinaNum = GetChinaNum + "点"
            For i = 2 To Len(num)
                bstr = Mid(num, i, 1)
                GetChinaNum = GetChinaNum + Mid(numshu, Val(bstr) + 1, 1)
            Next i
        End If
    End If
End Function