I like Modern C. I have reviewed it favorably in several places. I agree it is intermediate. I think 21st Century C by Ben Klemens and C Programming a Modern A

I like Modern C. I have reviewed it favorably in several places. I agree it is intermediate. I think 21st Century C by Ben Klemens and C Programming a Modern Approach by King are both more approachable alternatives as a modern C companions to K&R.