Where can I read more about the class hierarchy (ios, fstreambase, istream, etc.)?

Question

C++ / C#

The question has actually been asked.
Just to clarify, I'm currently going through the "Streams and Files" chapter and do not fully understand the whole relationship.
I would like to understand this topic in more detail.

Answer 1

https://en.cppreference.com/w/cpp/io

Answer 2

Files?
I remembered Laforet's book "Object-Oriented Programming in C++".
Try to read on it. Find the topic in the title. In general, yes, cppreference