推理文by阿誠

Function retWord(ByVal Num As Decimal) As String
'This two dimensional array store the primary word convertion of number.
retWord = ""
Dim ArrWordList(,) As Object = {{0, ""}, {1, "One"}, {2, "Two"}, {3, "Three"}, {4, "Four"}, _
{5, "Five"}, {6, "Six"}, {7, "Seven"}, {8, "Eight"}, {9, "Nine"}, _
{10, "Ten"}, {11, "Eleven"}, {12, "Twelve"}, {13, "Thirteen"}, {14, "Fourteen"}, _
{15, "Fifteen"}, {16, "Sixteen"}, {17, "Seventeen"}, {18, "Eighteen"}, {19, "Nineteen"}, _
{20, "Twenty"}, {30, "Thirty"}, {40, "Forty"}, {50, "Fifty"}, {60, "Sixty"}, _
{70, "Seventy"}, {80, "Eighty"}, {90, "Ninety"}, {100, "Hundred"}, {1000, "Thousand"}, _
{1000000, "Million"}, {1000000000, "Billion"}, {1000000000000, "Trillion"}}

Dim i As Integer
For i = 0 To UBound(ArrWordList)
If Num = ArrWordList(i, 0) Then
retWord = ArrWordList(i, 1)
Exit For
End If
Next
Return retWord
End Function