Example Documentation

# print_hours.cpp

Demonstrate time iteration, clock retrieval, and simple calculation.

    //Print the remaining hours of the day
    //Uses the clock to get the local time
    //Use an iterator to iterate over the remaining hours
    //Retrieve the date part from a time
    /* Expected Output something like:

    2002-Mar-08 16:30:59
    2002-Mar-08 17:30:59
    2002-Mar-08 18:30:59
    2002-Mar-08 19:30:59
    2002-Mar-08 20:30:59
    2002-Mar-08 21:30:59
    2002-Mar-08 22:30:59
    2002-Mar-08 23:30:59
    Time left till midnight: 07:29:01

    */

    #include "boost/date_time/posix_time/posix_time.hpp"
    #include <iostream>

    int
    main()
    {
      using namespace boost::posix_time;
      using namespace boost::gregorian;

      //get the current time from the clock -- one second resolution
      ptime now = second_clock::local_time();
      //Get the date part out of the time
      date today = now.date();
      date tommorrow = today + date_duration(1);
      ptime tommorrow_start(tommorrow); //midnight

      //iterator adds by one hour
      time_iterator titr(now,hours(1));
      for (; titr < tommorrow_start; ++titr) {
        std::cout << to_simple_string(*titr) << std::endl;
      }

      time_duration remaining = tommorrow_start - now;
      std::cout << "Time left till midnight: "
             << to_simple_string(remaining) << std::endl;
      return 0;
    }