example3_set_operations.cpp

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

void printSet(const std::set<int>& s, const std::string& name) {
    std::cout << name << ": ";
    for (int num : s) {
        std::cout << num << " ";
    }
    std::cout << std::endl;
}

int main() {
    std::set<int> set1 = {1, 2, 3, 4, 5};
    std::set<int> set2 = {4, 5, 6, 7, 8};

    printSet(set1, "Set 1");
    printSet(set2, "Set 2");

    // Union
    std::set<int> unionSet;
    std::set_union(set1.begin(), set1.end(), set2.begin(), set2.end(), 
                   std::inserter(unionSet, unionSet.begin()));
    printSet(unionSet, "Union");

    // Intersection
    std::set<int> intersectionSet;
    std::set_intersection(set1.begin(), set1.end(), set2.begin(), set2.end(), 
                          std::inserter(intersectionSet, intersectionSet.begin()));
    printSet(intersectionSet, "Intersection");

    // Difference (set1 - set2)
    std::set<int> differenceSet;
    std::set_difference(set1.begin(), set1.end(), set2.begin(), set2.end(), 
                        std::inserter(differenceSet, differenceSet.begin()));
    printSet(differenceSet, "Difference (set1 - set2)");

    // Symmetric Difference
    std::set<int> symDifferenceSet;
    std::set_symmetric_difference(set1.begin(), set1.end(), set2.begin(), set2.end(), 
                                  std::inserter(symDifferenceSet, symDifferenceSet.begin()));
    printSet(symDifferenceSet, "Symmetric Difference");

    return 0;
}