I noticed that /usr/games/caesar uses atoi() in order to parse the rotation
argument. I thought that it would be better if this used strtonum(), so
I've submitted a diff that changes this. It also changes the rotation
bounds check in the printit() function, and brings it into the argument
parsing portion of the main() code.
I wasn't sure if this is a worthwhile change, but it seems to clean up the
code a bit!