What is the new URL for pset3's wget?

Currently the specification for pset3 has http://cdn.cs50.net/2014/fall/psets/3/pset3/pset3.zip, but this appears to download fifteen and find files.

1 Answer 1


The zip file you linked contains folders for breakout and find, as specified in the problem set. There does not appear to be any fifteen content.

Note that find was moved to accompany breakout, as stated in the notes detailing the changes between the 2014 and 2015 course offerings. The fifteen project and files appear to have been discarded entirely.

It also appears that the Stanford Portable Library header files no longer have to be downloaded manually, as they've been embedded into the appliance for the 2015 offering of the course. This is mentioned in the new problem set specification:

Incidentally, even though I included gwindow.h with

#include "gwindow.h"

on video, we’ve since installed SPL deep inside the appliance (for convenience), so you should now include that header file (and other SPL header files) with code like:

#include <spl/gwindow.h>

The problem set specification also contains instructions for downloading additional SPL example files.

Let’s take a look at what you can do with SPL by way of some of Week 4’s examples. Go ahead and execute the below.

cd ~/Dropbox
wget http://cdn.cs50.net/2014/fall/lectures/4/m/src4m.zip
unzip src4m.zip
rm -f src4m.zip
cd src4m
  • 1
    Thanks for posting this. This forced me to look at what was going on. I had the old pset3.zip file in my Dropbox still and did not realize it...
    – LGill
    Jan 5, 2015 at 1:13
  • @LGill I'm glad you figured it out. Thanks for posting your solution and accepting the answer.
    – Chrisuu
    Jan 5, 2015 at 1:48

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