How can I determine the sheet name in a workbook that my function is sitting?

Question

Imagine I have a xls workbook containing 3 tabs, SheetA, SheetB, and SheetC. I want to write a simple VBA function that returns the name of the sheet where the function is c

Answer 1

You could do something like this:

Function sheetName(rng As Range) As String
    sheetName = rng.Parent.Name
End Function

Just pass the range the sheet is calling from (even the same range the formula is in).

In sheet1,

=sheetName(A1)

returns Sheet1

In Sheet2

=sheetName(Sheet1!A1)

Returns Sheet1 as well.