C++ set union

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

using namespace std;

void DumpClass(set<string> *myset)
{
    set<string>::iterator iter = myset->begin();

    while (iter != myset->end())
    {// w  ww.j a  v  a 2  s.c o m
        cout << *iter << endl;
        iter++;
    }
}

int main()
{
    set<string> set1;
    set<string> set2;

    set1.insert("Z");
    set1.insert("M");
    set1.insert("V");
    set1.insert("U");
    set1.insert("C");

    set2.insert("V");
    set2.insert("U");
    set2.insert("R");
    set2.insert("O");

    set<string> Union;
    set<string> Intersection;

    insert_iterator<set<string>> IntersectIterate(Intersection, Intersection.begin());

    insert_iterator<set<string>> UnionIterate(Union, Union.begin());

    set_intersection(set1.begin(),set1.end(),set2.begin(), set2.end(),IntersectIterate);
    
    cout << "===Intersection===" << endl;
    
    DumpClass(&Intersection);

    set_union(set1.begin(),set1.end(),set2.begin(), set2.end(),UnionIterate);

    cout << endl << "===Union===" << endl;

    DumpClass(&Union);

    return 0;
}