SCStudentRant?

I have a subj called "Fundaments of Operative Systems" (or something along those lines), and I have 2 crappy teachers, one for the theory classes, the other for the exercise classes.
The exercise classes teacher is said to be the worst in uni and every time I think about that class I get a bit anxious because I can never do anything in it. Basically we don't get taught code in theory classes and he just comes and says "do this exercise" without explaining anything first. And when he does I still don't understand it.
I bet like 90% of us have no idea how to program in C and we need that for those classes. I hate C with a passion because of this.
In the theory classes, the teacher explains most of the things without powerpoints, and when we don't understand something (either ask about something he said or what's written in the board), he REFUSES to explain or say what's written, because he has "explained it before". He even chuckles as if it was really funny that we can't read his handwriting or just didn't listen because we were writting things down OH MY GOD. So most of the times when I copy things from the boards and then look at them at home I'm like "what the hell is this, this doesn't make any sense, what did he even write" (has some word that looks like what he wrote with ?? around it)
I think they wanna watch us fail. I really do.
I kinda understand the theory classes, but half the test is writing code. How am I gonna write code if I don't understand it? I have a work for that subj to deliver until monday but I can't make it work because I don't know the code I have to write. Damn it all to hell jesus christ

Additional note: they're both in their 60s and should be retiring not long from now so maybe that's why they act so carelessly.
Love the uni, not so much some of the teachers