Count Alphabetical characters using VBScript- 2 Methods

In order to count Alphabetical characters using VBScript in a string, first we need to get the characters from the given string, one char at a time using the mid function of VBScript. Then check if the character is a numeric character. If no numeric character is found using isNumeric function, the given string is an alphabetical string.

Using isNumeric: Count alphabetical characters using VBScript

Example code

Function countAlphaChars()

    Dim oStr
    Dim oLength
    Dim oChar
    Dim iCounter

    oStr="goo23gle5"
    oLength=len(oStr)
    oAlphacounter=0

    For iCounter=1 to oLength

        If not isnumeric (mid(oStr,iCounter,1)) then
            oAlphacounter=oAlphacounter+1
        End if

    Next
    print oAlphacounter
    countAlphaChars=oAlphacounter
End Function

Using ASCII: Count alphabetical characters using VBScript

To count only the alphabetical characters, we need to iterate over each character in a string, checking if it falls within the alphabetic range (A-Z, a-z).

' Define the string to be analyzed
Dim strText
strText = "Hello, World! 123"

' Initialize the counter
Dim alphaCount
alphaCount = 0

' Loop through each character in the string
For i = 1 To Len(strText)
    ' Get the ASCII code of the current character
    Dim charCode
    charCode = Asc(Mid(strText, i, 1))
    
    ' Check if the character is alphabetical (A-Z, a-z)
    If (charCode >= 65 And charCode <= 90) Or (charCode >= 97 And charCode <= 122) Then
        alphaCount = alphaCount + 1
    End If
Next

' Display the result
WScript.Echo "Total alphabetical characters: " & alphaCount

Explanation of the Code

1. Define the Text String: strText holds the text we want to analyze.
2. Initialize a Counter: alphaCount starts at 0 and will be used to count each alphabetic character.
3. Loop Through Each Character: For i = 1 To Len(strText) goes through each character in the string.
4. Identify Alphabetic Characters: Asc() function returns the ASCII code, and we check if it falls within the ranges for uppercase (65-90) and lowercase (97-122) letters.
5. Display the Result: The final count of alphabetic characters is shown using WScript.Echo.