What are iterators in C++?

What are iterators in C++?

Iterators in C++ are objects that allow you to traverse through the elements of a container, like arrays or vectors.

Can you explain the different types of iterators?

Sure! There are several types of iterators in C++, including input iterators, output iterators, forward iterators, bidirectional iterators, and random access iterators.

What is the difference between a vector iterator and a list iterator?

A vector iterator allows random access to elements, while a list iterator only allows sequential access due to the underlying data structure.

How do I implement a custom iterator?

To implement a custom iterator, you need to define a class that overloads the necessary operators like ++, *, and !=.