This is one of the best books you can read if you're a C programmer trying to refine your chops. I have bought this book 4 times, and now keep my private PDF all to myself, because every time I loan it to a new C programmer I never get it back. :)

Seriously, if you want to know more about C than you do, I'm pretty sure this book will teach you something.

That said: I'm not sure it should be being posted as a scribd link to HN .. surely this is a violation of terms, unless the author has released it to the public domain?