Good C books?

[hsrender at happy.colorado.edu]

We are switching to using C in an advanced data structures course here 
(students demanded it) and I have been assigned the job of finding a
book to use.  I would greatly appreciate it if people could e-mail me
recommendations for good C books.  The books should provide a good
introduction to the language as well as covering more advanced uses.
If there is sufficient interest, I will summarize to the net.

BTW, if such a survey has already been done, I would appreciate any pointers
to the results.  Thanks.

hal render
render at zeppo.colorado.edu