What are const iterators in C++?

What are const iterators in C++?

Const iterators in C++ are used to traverse a container without modifying its elements. They provide read-only access.

How do they differ from regular iterators?

Regular iterators allow both reading and modifying elements, while const iterators only allow reading, ensuring data integrity.

Can you give me an example of using a const iterator?

Sure! Here's a simple example:

#include <vector>
#include <iostream>

int main() {
    std::vector<int> vec = {1, 2, 3, 4, 5};
    std::vector<int>::const_iterator it;
    for (it = vec.begin(); it != vec.end(); ++it) {
        std::cout << *it << " "; // prints elements without modifying them
    }
    return 0;
}