#include <fstream>

// include headers that implement a archive in simple text format
#include <boost/archive/text_oarchive.hpp>
#include <boost/archive/text_iarchive.hpp>

/////////////////////////////////////////////////////////////
// gps coordinate
//
// illustrates serialization for a simple type
//
class gps_position
{
private:
    friend class boost::serialization::access;
    // When the class Archive corresponds to an output archive, the
    // & operator is defined similar to <<.  Likewise, when the class Archive
    // is a type of input archive the & operator is defined similar to >>.
    template<class Archive>
    void serialize(Archive & ar, const unsigned int version)
    {
        ar & degrees;
        ar & minutes;
        ar & seconds;

        ++degrees;
        ++minutes;
        ++seconds;
    }
public:
    int degrees;
    int minutes;
    float seconds;
    gps_position(){};
    gps_position(int d, int m, float s) :
        degrees(d), minutes(m), seconds(s)
    {}
};

int main() {
    // create and open a character archive for output
    std::ofstream ofs("filename");

    // create class instance
    const gps_position g(35, 59, 24.567f);

    // write the content of object
    std::cout << g.degrees << " " << g.minutes << " " << g.seconds << std::endl;

    boost::archive::text_oarchive oa(ofs);
    // write class instance to archive
    oa << g;

    // write the content of object
    std::cout << g.degrees << " " << g.minutes << " " << g.seconds << std::endl;

    return 0;
}