What are C++ set iterators?

Can you explain what set iterators are in C++?

Sure! Set iterators in C++ are used to traverse elements in a set, which is a collection of unique elements.

How do I declare a set iterator?

You can declare a set iterator like this: std::set<int>::iterator it; where std::set<int> is your set type.

Can you show me an example of using a set iterator?

Of course! Here's a simple example:

#include <set>
#include <iostream>

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

What happens if I try to modify the set while iterating?

Modifying a set while iterating through it can lead to undefined behavior. It's best to avoid this.