I suggest that you replace the K&R reference by the following much better and more up-to-date one. I have never touched my K&R again since I bought the following book. If you don't want to throw K&R out, please add at least this reference and add to the K&R review that this old book does not cover the full ISO C run-time library (e.g. the wide character and locale support is missing almost completely) nor the 1994 C language extensions.
C - A Reference Manual, fourth edition
Author: Samuel P. Harbison and Guy L. Steele Jr.
Publisher: Prentice Hall, 1995
ISBN: 0-13-326232-4 (hard) 0-13-326224-3 (paper)
Price: ??.?? USD, 73.80 DEM
This book is an authoritative reference manual that provides a complete and precise description of the C language and the run-time library. It also teaches a C programming style that emphasizes correctness, portability, and maintainability. If you program in C, you want to have this book on your desk, even if you are already a C expert. The authors have been members of the ANSI/ISO C standards committee.
The Harbison/Steele has by now taken over the role of being the C bible from the traditional C book by Kernighan/Ritchie. In contrast to K&R, the Harbison/Steele covers the full ISO C standard, including the 1994 extensions. It also covers the old K&R C language as well as C++ compatibility issues. Especially the description of the standard C library, which every C programmer needs for daily reference, is considerably more complete and precise than the one found in appendix B of K&R.