set_sym_diff.cpp

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#include <algorithm>   // for copy, set_symmetric_difference
#include <set>         // for set
#include <iostream>    // for cout, endl
#include <iterator>    // for ostream_iterator
 
int main ()
{
    // Initialize some sets.
    const int a1[] = { 1, 3, 5, 7, 9, 11 };
    const int a3[] = { 3, 5, 7, 8 };
 
    std::set<int, std::less<int>, std::allocator<int> >
        odd (a1 + 0, a1 + 6),
        result,
        smalll (a3 + 0, a3 + 4);
 
    // Create an insert_iterator for result.
    std::insert_iterator<std::set<int, std::less<int>, std::allocator<int> > >
        res_ins (result, result.begin ());
 
    // Demonstrate set_symmetric_difference.
 
    typedef std::ostream_iterator<int, char, std::char_traits<char> > Iter;
 
    std::cout << "The symmetric difference of:\n{";
 
    std::copy (smalll.begin (), smalll.end (), Iter (std::cout, " "));
    std::cout << "} with {";
 
    std::copy (odd.begin (),odd.end (), Iter (std::cout, " "));
    std::cout << "} =\n{";
 
    std::set_symmetric_difference (smalll.begin (), smalll.end (),
                                   odd.begin (), odd.end (), res_ins);
 
    std::copy (result.begin (), result.end (), Iter (std::cout, " "));
    std::cout << "}\n\n";
 
    return 0;
}