UPDATED (7/4/12): THIS IS NOT AN ERROR. FILE WAS REMOVED FOR SECURITY REASONS (EVEN THOUGH IT WAS INTENTIONALLY BROKEN).

TO TAKE A LOOK AT HOW THE ORIGINAL FILE LOOKS LIKE, VISIT THE ADDRESS BELLOW:

http://www.sh3ll.org/c99.txt

YOU CAN CONTINUE WITH THE CHALLENGE USING THIS FILE (THE ONE YOU ARE READING RIGHT NOW) AS IF IT WAS AN ORIGINAL C99 FILE (LIKE THE ONE ON THE LINK ABOVE).
YOU DO NOT NEED TO FIND AND DOWNLOAD ANY OTHER FILE TO COMPLETE THIS CHALLENGE.

(Updated the above to avoid confusion after seeing numerous forum and shoutbox posts asking about this)