Don't fret about flunking it. If it's an untimed exam, simply ask
the questions here, and we'll be glad to help.
Rationale:
1. An untimed exam, as many of the online ones are, means anyone can
check a C book anyway. It's unfair on you if your competition
can ask questions in C forums and you can't. You may as well get
help from the best C forum on the Net.
2. You could post the questions under a different ID under the guise
of wanting to "clarify a misunderstanding", so we gain nothing by
stopping you from being more direct and asking the questions from
the exam here.
3. In many areas of life, having knowledge from books is no better
than having knowledge of books. Often just knowing where to find
an answer if you need it is the equal of knowing the answer to
begin with. You're clearly a resourceful person, so I have faith
that any "cheating" on your part won't affect the positive path
your life takes.
Yours,
Han from China