What does incrementing a constant iterator do?

Question

C++ / C#

I am writing my own random access iterator (the task is) for the list. I can not understand whether it makes sense to prescribe an increment of a constant iterator. As I understand it, a constant iterator does not change what it points to, but when an iterator (not a constant one) is increased, it simply moves further through the elements of the list. So, does a constant iterator move further down the list when incrementing? Or you just initialize it once and you can't move it anywhere?

Answer 1

const_iterator does not allow you to change the element of the collection it points to, but it moves through the collection in the same way as a non-const iterator. The analogs are const T* and just T*. Distinguish const T * from T * const.