I like to recommend C Interfaces & Implementations http://www.amazon.com/Interfaces-Implementations-Techniques-Creating-Reusable/dp/0201498413/ http://www.amaz

I like to recommend C Interfaces & Implementations http://www.amazon.com/Interfaces-Implementations-Techniques-Creating-Reusable/dp/0201498413/ http://www.amazon.com/Interfaces-Implementations-Techniques-... It uses Donald Knuth's literate programming which takes getting used to, however, it's a great case study of how to make a good library. There is a new book on "21st Century C" which I haven't read. It has mixed reviews, however. http://www.amazon.com/21st-Century-Tips-New-School/dp/1449327141/ http://www.amazon.com/21st-Century-Tips-New-School/dp/144932...