What is the purpose of the vector iterator in C++11?

What is the purpose of the vector iterator in C++11?

The vector iterator in C++11 allows you to traverse elements in a vector efficiently, providing access to each element.

How do I use a vector iterator in my code?

You can use a vector iterator by declaring it and then using it in a loop to access elements. For example:

std::vector<int> vec = {1, 2, 3};
for (std::vector<int>::iterator it = vec.begin(); it != vec.end(); ++it) {
    std::cout << *it << ' ';
}

What are the advantages of using iterators over traditional indexing?

Iterators provide a more abstract way to access elements, allowing for easier manipulation of different container types and better code readability.

Can I modify elements using a vector iterator?

Yes, you can modify elements using a vector iterator by dereferencing it and assigning a new value, like this:

*it = 10; // Changes the current element to 10