Read the OS class assignment recommendations.

Go through the OS class tips for C usage.

Run your code through a static/dynamic checker (as also stated in the link above). cppcheck and valgrind come into mind.

You may also run your code through the Linux kernel's checkpatch.pl: http://wintergreenworks.wordpress.com/2012/05/30/checkpatch-linux-coding-style-check/

Use a header with logging macros. Nice links:

• http://elf.cs.pub.ro/so/res/teme/tema5-util/debug.h
• http://c.learncodethehardway.org/book/ex20.html
• http://stackoverflow.com/questions/1644868/c-define-macro-for-debug-printing/1644898#1644898