C99

Where can I find a good introduction to the features introduced in C99? I just realized that my C is still stuck with K&R ed. 2.

The GPL has never been successfully enforced in a court of law, so just enjoy the free code and do what you want with it. And by "free" I mean the conventional sense of the word, not the crap that Stallman made up.

A couple of friends work for a large commercial software house and they stuff plenty of GPL code in the programs. There is virtually no risk and a lot of benefit.