How to Tell If Something Sucks

1) GUI
2) Written in a language that isn't BBCode, lisp, haskell, lua, or C. (Assembly or an HDL may be acceptable.)
3) Discussed on codinghorror
4) It's a programming book about a specific language, including any language in (2), except possibly "The Little Lisper/Schemer" and K&R.
5) It's mentioned in a non-saged /prog/ reply.

As much as I like C, I doubt it is that functional because as far as I know (which isn't that far) that C doesn't include input as part of the language standard.