OFF97: VBA Procedure to Convert Numbers to Roman Numerals (184657)

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Example

1. Start any Office program.
2. Start the Visual Basic Editor and insert a module into your project.
3. Type the following code in the module:

         Function Num2Roman (ByVal N As Integer) As String
   
           Const Digits = "IVXLCDM"
   
           Dim I As Integer, Digit As Integer, Temp As String
   
           I = 1
           Temp = ""
           Do While N > 0
             Digit = N Mod 10
             N = N \ 10
             Select Case Digit
               Case 1
                 Temp = Mid(Digits, I, 1) & Temp
               Case 2
                 Temp = Mid(Digits, I, 1) & Mid(Digits, I, 1) & Temp
               Case 3
                 Temp = Mid(Digits, I, 1) & Mid(Digits, I, 1) & _
                        Mid(Digits, I, 1) & Temp
               Case 4
                 Temp = Mid(Digits, I, 2) & Temp
               Case 5
                 Temp = Mid(Digits, I + 1, 1) & Temp
               Case 6
                 Temp = Mid(Digits, I + 1, 1) & Mid(Digits, I, 1) & Temp
               Case 7
                 Temp = Mid(Digits, I + 1, 1) & Mid(Digits, I, 1) & _
                        Mid(Digits, I, 1) & Temp
               Case 8
                 Temp = Mid(Digits, I + 1, 1) & Mid(Digits, I, 1) & _
                        Mid(Digits, I, 1) & Mid(Digits, I, 1) & Temp
               Case 9
                 Temp = Mid(Digits, I, 1) & Mid(Digits, I + 2, 1) & Temp
             End Select
             I = I + 2
           Loop
           Num2Roman = Temp
         End Function
   						

4. On the View menu click Immediate Window.
5. Type the following into the Immediate window and press ENTER:

   ?Num2Roman(948)

   You will see the following in the Immediate window:

   ?Num2Roman(948)
   CMXLVIII