如何实现人民币的大写转换？


答案：第一个办法，这个程序可以进行万亿以下的货币金额转换（够用的了吧），其中汉字与数字均按一位计：
Function AtoC(a As Currency) As String
     ' 定义两个字符串，A的值最多是两位小数. 
    Dim String1 As String  
' 如下定义.
    Dim String2 As String  
' 如下定义.
    Dim String3 As String  
' 从原A值中取出的值.
    Dim I As Integer       
 ' 循环变量.
    Dim J As Integer        
' A的值乘以100的字符串长度.
    Dim Ch1 As String      
' 数字的汉语读法.
    Dim Ch2 As String      
' 数字位的汉字读法.
    Dim nZero As Integer    
' 用来计算连续的非零数是几个.

    String1 = "零壹贰叁肆伍陆柒捌玖"
    String2 = "万仟佰拾亿仟佰拾万仟佰拾元角分"
    'MsgBox CStr(a * 100)
    If InStr(1, CStr(a * 100), ".") <> 0 Then
        err.Raise 5000, , "该函数( AtoC() )只转换两位小数以内的数值!"
    End If

    J = Len(CStr(a * 100))
    String2 = Right(String2, J)        
' 取出对应位数的StrING2的值.

    For I = 1 To J
        String3 = Mid(a * 100, I, 1)    
' 取出需转换的某一位的值.
        If String3 <> "0" Then
            Ch1 = Mid(String1, Val(String3) + 1, 1)
            Ch2 = Mid(String2, I, 1)
            nZero = nZero + 1          
' 表示本位不为零.
        Else
            If nZero <> 0 Or I = J - 9 Or I = J - 5 Or I = J - 1 Then
                If Right(AtoC, 1) = "零" Then AtoC = Left(AtoC, Len(AtoC) - 1)
                Ch1 = "零"
            Else
                Ch1 = ""
            End If
                                   
If I = J - 10 Then
' 如果转换的数值需要扩大，则要改动以下表达式 I 的值.
                Ch2 = "亿"
            ElseIf I = J - 6 Then
                If nZero <> 0 Then
                    Ch2 = "万"
'                    nZero = 0
                End If
            ElseIf I = J - 2 Then
                Ch2 = "元"
            ElseIf I = J Then
                Ch2 = "整"
            Else
                Ch2 = ""
            End If
            nZero = 0
        End If

        AtoC = AtoC & Ch1 & Ch2
    Next I

        AtoC = Replace(AtoC, "零元", "元")
        AtoC = Replace(AtoC, "零万", "万")
        AtoC = Replace(AtoC, "零亿", "亿")
        AtoC = Replace(AtoC, "零整", "整")
       ' 以上将多余的零去掉

End Function
 
第二个办法：照下面写就成了！
<%
dim str(9)
str(0)="零"
str(1)="壹"
str(2)="贰"
str(3)="叁"
str(4)="肆"
str(5)="伍"
str(6)="陆"
str(7)="柒"
str(8)="捌"
str(9)="玖"
aa=Request.form("source")
hh=formatnumber(aa,2,-1)
aa=replace(hh,".","")
aa=replace(aa,",","")
for i=1 to len(aa)
    s=mid(aa,i,1)
  mynum=str(s)
  select case(len(aa)+1-i)
    case 1: k= mynum&"分"
    case 2: k= mynum&"角"
    case 3: k= mynum&"元"
    case 4: k= mynum&"拾"
    case 5: k= mynum&"佰"
    case 6: k= mynum&"仟"
    case 7: k= mynum&"万"
    case 8: k= mynum&"拾"
    case 9: k= mynum&"佰"
    case 10: k= mynum&"仟"
  end select
    m=m&k
next
%>

<html>
<head>
<title>精彩春风之数字大小写转换</title>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
</head>
<!--
Elseif(s=".") then
    n=m
    i=i+2
    for j=i to len(aa)
      s=mid(aa,i,1)
        mynum=str(s)
      select case(len(aa)+1-i)
      case 1: p= mynum&"分"
      case 2: p= mynum&"角"
      end select
      m=m&p
    next
-->

<body>
<form method="post"  name="forma">
  <input type="text" name="source" value="<%=hh%>">
  =
  <input type="text" name="result" value="<%=m%>" size="40">

<input type="submit" name="Submit" value="开始转换" >
</form>
</body></html>
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