You might look at 21st Century C: C Tips from the New School by Ben Klemens. It's very new (November 2012), and has some really nice stuff in it. It's getting

You might look at 21st Century C: C Tips from the New School by Ben Klemens. It's very new (November 2012), and has some really nice stuff in it. It's getting mixed reviews, but I really found it useful (even if I, like others, disagree with some of his tips). It's particularly good at sorting out what you can do in C99 and C11. [edit: He has a really useful section on sorting out the different meanings of "static" in C, though I don't recall this being one of them.]