How do iterators work with vectors in C++?

Can you explain how iterators work with vectors in C++?

Sure! In C++, iterators are used to traverse elements in a vector. They act like pointers.

How do I declare an iterator for a vector?

You can declare an iterator using std::vector<int>::iterator it; for a vector of integers.

How do I use the iterator to access elements?

You can use the iterator with the dereference operator *it to access the element it points to.

Can you show me a simple example?

Certainly! Here's a quick example:

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

This will print the elements of the vector.