This page has been retired. After 15 years as a contract programmer, I firmly believe the ability to answer computer programming trivia questions is not a reliable indicator of a candidate's ability to thrive in a work environment. If you really want to know how to hire great programmers, read what Joel Spolsky has to say:
http://www.joelonsoftware.com/articles/GuerrillaInterviewing3.html

If you still want to see my list of tech screening questions, check out the older versions of this page on archive.org: http://web.archive.org/web/*/www.apostate.com/programming/c-tech.html