What are advanced set operations in C++?

Can you explain advanced set operations in C++?

Sure! Advanced set operations in C++ include union, intersection, difference, and symmetric difference using the STL set.

How do I perform a union of two sets?

You can use the std::set_union algorithm from the <algorithm> header to perform a union of two sets.

What about finding the intersection?

For intersection, you can use std::set_intersection, which will give you the common elements of both sets.

Can you provide a code example?

Certainly! Here's a simple example:

#include <iostream>
#include <set>
#include <algorithm>

int main() {
    std::set<int> set1 = {1, 2, 3, 4};
    std::set<int> set2 = {3, 4, 5, 6};
    std::set<int> result;

    std::set_union(set1.begin(), set1.end(), set2.begin(), set2.end(), std::inserter(result, result.begin()));
    // result now contains the union of set1 and set2
}

This will give you the combined elements of both sets.