How do I use iterators in C++?

How do I use iterators in C++?

In C++, iterators are used to traverse elements in a container. They act like pointers. Would you like an example?

Yes, please provide an example of using an iterator with a vector.

Sure! Here's a simple example:

#include <iostream>
#include <vector>

int main() {
    std::vector<int> vec = {1, 2, 3, 4, 5};
    for (std::vector<int>::iterator it = vec.begin(); it != vec.end(); ++it) {
        std::cout << *it << " ";
    }
    return 0;
}

This code prints the elements of the vector.

What are the advantages of using iterators over traditional indexing?

Iterators provide a uniform way to access elements regardless of the container type, and they can work with different data structures seamlessly.

Can I use iterators with other STL containers?

Absolutely! Iterators can be used with all Standard Template Library (STL) containers like lists, sets, and maps.