Are you serious?
Consider this: you're opening the console to go to a directory and maybe rename some file. Now everytime you issue a
cd
command, a flashing screen suddenly appears, telling you:
********************************************************
WELCOME TO PROGRAM CD
********************************************************
This program was written by THE GANG OF ONE
for: Dr. I Diot
Represents : Group Assignment for C / MSDOS 2.0 1983
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
This program will change your current directory with the syntax
cd [directory], where :
'cd' is the name of this command
[directory] is the name of the directory you want to change to
Well ... just how long would you consider this funny? Judging by the lengths I go to to prevent all kind of flashy annoying stuff in my browser (and avoiding sites that I cannot restrain in that way), I can tell you that I would not consider it funny at all!
And: what has this to do with your assignment?
My advice: If you really want to try out doing that kind of stuff, go ahead and do it. I believe there are nonprintable chars, that, when printed, create this kind of effect. (at least this used to work back in the time of 8 bit computers, which is about the last time I tried anything like that).
But do not show it to your instructor, or he will kill you!