Programmer J

#include <iostream>

#include <boost/date_time/gregorian/gregorian.hpp>

int main()

{

    using namespace boost::gregorian;

    const int day = gregorian_calendar::end_of_month_day(2011, 2);

    std::cout << day << std::endl;

}

#include <iostream>

#include <boost/date_time/gregorian/gregorian.hpp>

using namespace boost::gregorian;

int main()

{

    const date d1(2011, Apr, 1);

    const date d2 = d1 + months(1) - days(1);

    std::cout << to_simple_string(d2) << std::endl;

}

#include <iostream>

#include <boost/date_time.hpp>

#include <boost/date_time/c_local_time_adjustor.hpp>

#include <boost/date_time/local_time_adjustor.hpp>

int main(const int argc, const char * const argv[]) 

{

using namespace boost;

posix_time::ptime now = posix_time::second_clock::universal_time();

// utc to local 1

date_time::c_local_adjustor<posix_time::ptime> adj1;

posix_time::ptime t1 = adj1.utc_to_local(now);

// utc to local 2

date_time::local_adjustor<posix_time::ptime, 9, posix_time::no_dst> adj2;

posix_time::ptime t2 = adj2.utc_to_local(now);

// local to utc

posix_time::ptime t3 = adj2.local_to_utc(t2);

// out

std::cout << now << std::endl;

std::cout << t1 << std::endl;

std::cout << t2 << std::endl;

std::cout << t3 << std::endl;

return 0;

}