#include <boost/serialization/nvp.hpp>
#include <boost/archive/xml_oarchive.hpp>
#include <iostream>
#include <sstream>

using namespace std;

using boost::serialization::make_nvp;

struct SerializeMe{
  template <class Archive>
  void serialize(Archive& ar){
    ar & make_nvp("x",x);
    ar & make_nvp("y",y);
  }

  double x;
  double y;
};

using namespace std;
int main()
{
  SerializeMe to_serialize;
  to_serialize.x = 0;
  to_serialize.y = 1;

  ostringstream out;

  {
    boost::archive::xml_oarchive ar(out);
    to_serialize.serialize(ar);
  }
  cout<<out.str()<<endl;
}