Your logic is flawwed... You're asking grad to be 'A', 'B', 'C', 'D', and 'F' at the same time, which it can't.
Switch the exclusive or logic to exclusive and (&&)
Type: Posts; User: helloworld922
Your logic is flawwed... You're asking grad to be 'A', 'B', 'C', 'D', and 'F' at the same time, which it can't.
Switch the exclusive or logic to exclusive and (&&)