How do I use iterators with std::list in C++11?

How do I use iterators with std::list in C++11?

In C++11, you can use iterators to traverse a std::list. Here's a simple example:

#include <iostream>
#include <list>

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

This code will print the elements of the list.

Can you explain how to modify elements using iterators?

Certainly! You can modify elements by dereferencing the iterator. Here's an example:

for (auto it = myList.begin(); it != myList.end(); ++it) {
    *it *= 2; // This will double each element in the list
}

After this loop, the list will contain {2, 4, 6, 8, 10}.

What about using const_iterators?

Good question! A const_iterator allows you to traverse the list without modifying its elements. Here's how you can use it:

for (auto it = myList.cbegin(); it != myList.cend(); ++it) {
    std::cout << *it << " "; // You can read but not modify the elements
}