I suggest learning C properly before you make more of a fool out of yourself. It's more constructive, too; because it actually improves your situation. Right now you're just digging a bigger hole.
Rest assured, except for the C11 changes to the standard, I do know C pretty well.
I majored in systems programing with focus on distributed computing, graphics and compiler design, so I got to use it a lot, and even teach it to first grade students.
My first job was writing server secure code across Aix, HP-UX, Solaris, Windows NT/2000.
So what about that quiz?