The C Prog. Lang. Book Exercises & MIT 6.1810's "Optional" Lab 1 utils exercises

Rule 1: No meta during session. Ask "Why this practice group?" either before or after a session. Sessions are for working through problem solutions.

See exercises in Chapters 1 thru 6:
https://www.cs.emory.edu/~cheung/Courses/255/Syllabus/1-C-intro/Docs/C-book.pdf

See the "optional" exercises at the end of MIT 6.1810's utils lab (lab1):
https://pdos.csail.mit.edu/6.1810/2025/labs/util.html