Your example of an answer is actually the correct way to look at it. The ambient field points into the page, so according to Lenz's law, the induced current will create a field out of the page.
If you "grab" the ring, and let your thumb rest along the ring, the tips of your fingers go around...
All that said, you can do anything with C :) It's just a matter (how long it takes to program) vs (how important is performance) for a task by task basis. You can't go wrong with learning C
Depends on what you want to do.
C is closer to the metal, yadda yadda, but you lose some functionality and don't gain much over the equally fast but object oriented c++. Before anyone corrects me by saying c is more basic and therefore faster than c++, remember that c++ is so popular, and a...