Loop predefined sequence through cells in excel - list

Question

Have been searching for a few hours now I'm stuck. Not really sure what I'm searching for but guessing some VBA.
What I want to do in excel is this:
Have a predefined list i.e. [a,a#,b,c,c#...g#]
Now when somebody enters value 'A' into cell A20 then A19 will be the next on the list 'A#', A18 will be 'B', A17 will be 'C' etc.
If the value C is entered into cell A20 then A19 would be 'C#' and so on...
Once the list reaches G# it shall repeat from A again. This would repeat until cell A2 is reached.
Even a point in the right direction would be great as I don't really know what to search for. Have tried 'arrays' 'loop' 'cycle' without much luck.
Thanks in advance

Answer 1

You would do better learning the basics of VBA than searching for odd terms. Search for "Excel VBA Tutorial". There are many to choose from so try a few then complete the one that matches your learning style. I prefer books. I visited a good library; reviewed their Excel VBA Primers and then the borrowed what I thought were the best to try at home. Finally I bought the best as a permenent reference book.
Your questions is very unclear but I think you need a For Each loop within a Do loop. You will find an introduction to loops near the start of any tutorial or primer. Try to develop this:
Sub demo()
Dim CellId As Variant
Dim LoopCount As Long
' #### Replace Tidy with the name of a worksheet in your workbook.
With Worksheets("Tidy")
Do While True
For Each CellId In Array("A20", "A19", "A18", "A17")
Debug.Print CellId & "=" & .Range(CellId).Value
If LoopCount >= 3 Then
Exit Do
End If
Next
LoopCount = LoopCount + 1
Loop
End With
End Sub