http://www.rt.com/man/ gives definitions & parameters of lotsa functions.
Arranged alphabetically. No time wasted.
Great site for people (like me) who forget functions and parameters.
Concise yet thorough.
What alphabetically arranged, quick-search resources can you add. There's a shortage, don't you know, so share, please.
In particular, I would be thrilled to see a good discussion of cin and cout.