Problem Set 2

Collaboration on problem sets is not permitted except to the extent that you may ask classmates and others for help so long as that help does not reduce to another doing your work for you, per the course’s policy on academic honesty.

For this problem set, you’ll again use CS50 IDE, a cloud-based programming environment.

What to Do

Are you an edX student? Don’t attempt to follow these instructions! Head over to cs50.edx.org or cs50.harvard.edu/x, and use the instructions there instead! These instructions are only for the on-campus course!

Go to ide.cs50.io and click “Sign in with GitHub” to access your CS50 IDE.
Submit Readability
Submit one of:
- Caesar if feeling less comfortable
- Substitution if feeling more comfortable
Submit this form.

If you submit both Caesar and Substitution, we’ll record the higher of your two scores.

When to Do It

By .

How to Get Help

Browse or search for answers on Ed or post your own questions!
Verbalize your logic to a rubber duck (or other inanimate or inanimate object) and see if you hear any illogic in your own words. There’s even a rubber duck built into CS50 IDE with whom you can chat!
Sign up for a tutorial!

Advice

Try out any of David’s programs from class via Week 2’s examples.
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 readability
```
is yielding errors, try running
```
help50 make readability
```
instead!