we had that one teacher in the apprenticeship in the first year who taught us C. There were some people who already knew the language but most of us didn't and we had this one horrible test where we had to do some for and while loops with stars... Like generating something like this:
********
*******
******
*****
****
***
**
*
so most of rhat stuff we never learnt and he couldn't explain to us why our code wasn't correct and we all ended up getting really bad grades in that subject for something really basic -_- just because he couldn't explain it to us and test things we never had