Once you have submitted, check out the gallery. Your submission (if it compiles and generates valid output) will be displayed there (give 15 minutes or so for this to happen).
The gallery link is
http://cgi.cse.unsw.edu.au/~cs1917/16s1/labs/gallery.pl?gallery=FirstIllusion
Resource created Saturday 09 April 2016, 03:33:41 PM, last modified Saturday 09 April 2016, 03:34:05 PM.