C中哪些重要的概念是你没有从老师那里学到的?

In September, I will give my first lectures on C to students in engineering school (usually I teach math and signal processing, but I have also done a lot of practical work in C, without giving the lectures). Computer science is not their main topic (they are more studying electronics and signal processing), but they need to have a good background in programming (some of them will maybe become software developers)In September, I will give my first lectures on