Question

What are Iterators?

(a) Iterators are used to iterate over C-like arrays

(b) Iterators are used to iterate over pointers

(c) Iterators are used to point memory addresses of STL containers

(d) Iterators are used to iterate over functions

I got this question in a job interview.

Origin of the question is Standard Template Library in section Derived Classes, Templates & Exception Handling in C++ of C++

Answer 1

The correct answer is (c) Iterators are used to point memory addresses of STL containers

The best explanation: In C++, Iterators are provided to iterate over the STL containers.