What are some examples of using sets in C++11?

Can you give me some examples of how to use sets in C++11?

Sure! In C++11, you can use the std::set to store unique elements. Here's a simple example:

#include <iostream>
#include <set>

int main() {
    std::set<int> mySet;
    mySet.insert(1);
    mySet.insert(2);
    mySet.insert(2); // Duplicate, won't be added

    for (int num : mySet) {
        std::cout << num << " ";
    }
    return 0;
}

What happens if I try to insert a duplicate value?

The std::set will ignore the duplicate value, ensuring all elements remain unique.

Can I perform operations like union or intersection with sets?

Yes! You can use std::set_union and std::set_intersection from the <algorithm> header to perform these operations.