I have always had a great deal of respect for C, and I would like to start writing in it. However, while I am skilled in other languages, I basically don't know any C off the top of my head.

I find that I learn better and faster by attempting projects, rather than working through a book ir taking a class. For example, to learn Perl, I am working on a basic disk image writer that's coming along nicely.

So, what do you think might be a good idea for my first C project?

EDIT: Zig is also something I'm interested in learning. Same question, different language.