I used k&r as my first C book. You can learn C from it. However it does teach a C that is not really used in the wild. Specifically function definitions and tri-glyphs. Its memory management is kind of hand wavy and it does not stress enough the importance of getting the types right (like the nightmare of printf). Both of which can cause memory issues very quickly. If you start with that book I would recommend one of those others to go along with it. Using C is easy. Getting it right takes time, practice, and a few stubbed toes.
I too learned C from K&R and really loved it. I did not have any other thing to do and there was no internet and no one telling me that C is bad. Nor was I aware of other cool languages. I did not even have a computer at that time, so I wrote most of the exercises on paper. Later my father bought me a 486DX66 and I typed in most of the programs in the book. Those were fun times!
