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

// Instead of using namespace std, let’s try explicit using declarations:

using std::copy;
using std::cout;
using std::ostream_iterator;
using std::set;

int main() {
    set<short> s = {11, 22, 33, 44, 55};
    for (auto v : s)
	cout << v << '-';
    cout << '\n';

    ostream_iterator<int> it(cout,", ");
    copy(s.begin(), s.end(), it);
    cout << '\n';

    return 0;
}