# AlphaConvert

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 Submitted on: 1/7/2015 12:23:00 PM By: Matt Marooney (from psc cd) Level: Advanced User Rating: By 3 Users Compatibility: VB 3.0, VB 4.0 (16-bit), VB 4.0 (32-bit), VB 5.0, VB 6.0 Views: 623

Converts two character strings of A-Z or AA-ZZ into integer equivalents. Example: User inputs "A", returns 1, user inputs AE, returns 110 and so on.

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 ``` '************************************** ' Name: AlphaConvert ' Description:Converts two character strings of A-Z or AA-ZZ into integer equivalents. Example: User inputs "A", returns 1, user inputs AE, returns 110 and so on. ' By: Matt Marooney (from psc cd) ' ' Inputs:Two character string variable is passed to this function ' ' Returns:Returns Integer equiv of the string '************************************** ' User inputs a string of 2 characters, uppercase or lowercase. 'Function returns the combined integer value of the string (ex. A = 1, B=2... 'AA = 27, AB = 28...ect.) Function GetNumber(UserInput As String) As Integer Dim UpperCaseArray(1, 26) As String Dim LowerCaseArray(1, 26) As String Dim UpperCaseString As String Dim LowerCaseString As String Dim FirstNum As Integer Dim SecondNum As Integer UpperCaseString = "ABCDEFGHIJKLMNOPQRSTUVWXYZ" LowerCaseString = "abcdefghijklmnopqrstuvwxyz" 'Assign string characters to array cells For x = 1 To Len(UpperCaseString) UpperCaseArray(1, x) = Mid(UpperCaseString, x, 1) LowerCaseArray(1, x) = Mid(LowerCaseString, x, 1) Next x If Len(UserInput) = 1 Then ' check for single character input For y = 1 To Len(UpperCaseString) 'If the input from the user is A-Z or a-z the Function returns 1-26 If Mid(UserInput, 1, 1) = UpperCaseArray(1, y) Then GetNumber = y End If If Mid(UserInput, 1, 1) = LowerCaseArray(1, y) Then GetNumber = y End If Next y Else 'If User Input has two characters... 'Check first character...store numerical value in FirstNum For z = 1 To Len(UpperCaseString) If Mid(UserInput, 1, 1) = UpperCaseArray(1, z) Then FirstNum = z End If If Mid(UserInput, 1, 1) = LowerCaseArray(1, z) Then FirstNum = z End If Next z 'Check second character 'Store numerical value in SecondNum For w = 1 To Len(UpperCaseString) If Mid(UserInput, 2, 1) = UpperCaseArray(1, w) Then SecondNum = w End If If Mid(UserInput, 2, 1) = LowerCaseArray(1, w) Then SecondNum = w End If Next w 'Algorithm for adding the values for the first character to that 'of the second character to determine which set of 26 the user 'selected. 'i.e. if user enters "AA" then this loop determines that the first 'character is equal to one. the loop returns 26 + 1, or 27. So, the 'value of user input of "AA" is 27. And so on and so forth... 'If the value entered is "BA", the algorithm returns 52 + 1, or 53 'This loop will return the values for up to "IZ" 'To extend to ZZ, merely change number of iterations in this loop to 26 For V = 1 To 9 If FirstNum = V Then GetNumber = ((26 * V) + SecondNum) End If Next V End If End Function ```

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