Problem Set 4

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.

The staff conducts random audits of submissions to CS50x. Students found to be in violation of this policy will be removed from the course. Students who have already completed CS50x, if found to be in violation, will have their CS50 Certificate permanently revoked.

What to Do

Be sure you have completed Lab 4 before beginning this problem set.

Log into cs50.dev using your GitHub account
Run update50 in your codespace’s terminal window to ensure your codespace is up-to-date and, when prompted, click Rebuild now
Submit one of:
- this version of Filter if feeling less comfortable
- this version of Filter if feeling more comfortable
Submit one of:
- Recover
- Reverse

If you submit both versions of Filter, we’ll record the higher of your two scores.

When to Do It

By 2023-12-31T23:59:00-05:00.

Advice

Try out any of David’s programs from Week 4.
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 filter, and
```
make filter
```
is yielding errors, try running
```
help50 make filter
```
instead!