This is a revised assignment -- the previous one was actually for problems from a different textbook and if you tried to do it using this semester's book you would have found a: some of the problems were excessively hard and b: others were non-existent.
The correct problems from K&R are (from Chapter 5):
P1, P2, P5, P6, P8, P14, P19, P33, P37
If you have already done problems from the other set you may make a one-for-one substitution of any or all of those problems for these.
I have also extended the due date to Friday.