What are some common mistakes when using iterators in C++?

What are some common mistakes when using iterators in C++?

Some common mistakes include dereferencing end iterators, modifying containers while iterating, and using invalidated iterators.

Can you explain why dereferencing end iterators is a mistake?

Dereferencing an end iterator leads to undefined behavior because it points to a position past the last element.

What happens if I modify a container while iterating over it?

Modifying a container during iteration can invalidate iterators, leading to runtime errors or unexpected behavior.

How can I safely modify a container while iterating?

You can use a copy of the container or iterate in reverse to safely modify elements without invalidating iterators.