Professor Bruce is the best person you can take CS31 with. He knows his subject well, and even gives out extra credit as well as recorded lectures.

Showing up to class is not mandatory but would still recommend because he's quite funny, love his stories. The project specs are sometimes unclear but still you can go up to him in office hours and he'll respond appropriately. I would recommend religiously attending discussion and doing all the worksheets.
His explanation of pointers and classes was one of the best

Professor Huang was very generous with extra credit and often allowed resubmission of projects to fix cosmetic errors! Tests were very manageable and FRQs were done in canvas, so we could type code instead of handwriting it, which I really appreciated.