What are some examples of const iterators in C++?

What are some examples of const iterators in C++?

In C++, const iterators are used to traverse containers without modifying their elements. For example, using a const_iterator with a vector:

Can you show me a code snippet?

Sure! Here's a simple example:

#include <iostream>
#include <vector>

int main() {
    std::vector<int> vec = {1, 2, 3, 4, 5};
    std::vector<int>::const_iterator it;

    for (it = vec.cbegin(); it != vec.cend(); ++it) {
        std::cout << *it << " ";
    }
    return 0;
}

This code uses a const_iterator to print the elements of the vector.

What happens if I try to modify an element using a const iterator?

If you try to modify an element using a const iterator, you'll get a compilation error. Const iterators are designed to prevent modification of the elements they point to.

Are there any other types of iterators in C++?

Yes, C++ has several types of iterators, including regular iterators, reverse iterators, and input/output iterators, each serving different purposes.