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You can use the following formula to check if a cell contains any of the special characters you mentioned:
Formula:
=IF(SUMPRODUCT(--ISNUMBER(SEARCH({"*","?","/"},A1)))0,TRUE,FALSE)
Here,
A1 is the cell you want to check for special characters. You can change this to the cell reference of your choice.
Let me explain how this formula works:
- SEARCH function is used to find the position of each special character in the cell. If the character is not found, it returns an error value #VALUE!.
- ISNUMBER function is used to convert the error values to FALSE and the position values to TRUE.
- The double negative (--) coerces the TRUE/FALSE values to 1/0.
- SUMPRODUCT function adds up the 1s and 0s.
- If the sum is greater than 0, it means at least one special character was found in the cell, so the formula returns TRUE. Otherwise, it returns FALSE.