What are the different types of iterators in C++ std::vector?

What are the different types of iterators in C++ std::vector?

In C++, std::vector provides several types of iterators: begin(), end(), rbegin(), rend(), and const versions of these.

Can you explain the difference between regular and reverse iterators?

Sure! Regular iterators traverse the vector from the beginning to the end, while reverse iterators traverse from the end to the beginning.

How do I use these iterators in a loop?

You can use a for loop like this: for(auto it = vec.begin(); it != vec.end(); ++it) { /* access *it */ }.

What about const iterators?

Const iterators are similar but prevent modification of the elements they point to. Use cbegin() and cend() for const iterators.