What should be the required set of knowledge before entering an internship in an IT company?

Question

C++ / C#

Actually, what should it be? Of course, I understand that different companies = different requirements, but still, can anyone tell about their experience, advise what to learn / read / repeat before the interview? I want to try, but there are doubts about the sufficiency of my knowledge.
Language: C++

Answer 1

Well, try it! If knowledge is not enough, you will be informed, then you will think about how to correct this situation. And for sure, in the description of the offer from the company there is a list of necessary skills. If not, you can ask the representatives of the company about it.

Answer 2

Take some online C++ test (brainbench.com, certifications.ru). Gain more than 75% - so your knowledge of C ++ is very good.

Answer 3

On the right there is a "Huntim" block. Usually, companies describe the requirements in detail when describing a job. You can look there.