Problem Set 1

What to Do

  1. Log into Ed via this link and then reply to this thread to say hello (and, if you’d like, a little about yourself!) to other students and staff. If you don’t yet have an account, you should first sign up for Ed.
  2. Go to and click “Log in” to access your CS50 IDE.
  3. Submit one of:
  4. Submit one of:
    • Cash if feeling less comfortable
    • Credit if feeling more comfortable

When to Do It

By 2021-12-31T23:59:00-05:00.


  • Try out any of David’s programs from class via Week 1’s source code.
  • If you see any errors when compiling your code with make, focus first on fixing the very first error you see, scrolling up as needed. If unsure what it means, try asking help50 for help. For instance, if trying to compile hello, and
make hello

is yielding errors, try running

help50 make hello