Boost Example

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

 std::cout << boost::format("%04d") % boost::posix_time::microsec_clock::
      universal_time().date().year() << "/";
  std::cout << boost::format("%02d") % boost::posix_time::microsec_clock::
      universal_time().date().month().as_number()<<"/";
  std::cout << boost::format("%02d") % boost::posix_time::microsec_clock::
      universal_time().date().day() <<",";
  std::cout << boost::format("%02d") % boost::posix_time::microsec_clock::
      universal_time().time_of_day().hours() <<":";
  std::cout << boost::format("%02d") % boost::posix_time::microsec_clock::
      universal_time().time_of_day().minutes() <<",";