boost_1_45_0/libs/date_time/xmldoc/ex_end_of_month_day.xml

<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE library PUBLIC "-//Boost//DTD BoostBook XML V1.0//EN" 
"../../../tools/boostbook/dtd/boostbook.dtd">

<!-- Copyright (c) 2001-2004 CrystalClear Software, Inc.
     Subject to the Boost Software License, Version 1.0. 
     (See accompanying file LICENSE_1_0.txt or  http://www.boost.org/LICENSE_1_0.txt)
-->

<section id="date_time.examples.end_of_month_day">
  <title>End of the Months</title>

  <para>
    Iterates accross the remaining months in a given year, always landing on the last day of the month.
  </para>
  <programlisting>
    <![CDATA[
  /* Simple program that uses the gregorian calendar to find the last
   * day of the month and then display the last day of every month left 
   * in the year.
   */

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

  int
  main()
  {
    using namespace boost::gregorian;
    
    std::cout << "   Enter Year(ex: 2002): ";
    int year, month;
    std::cin >> year;
    std::cout << "   Enter Month(1..12): ";
    std::cin >> month;
    try {
      int day = gregorian_calendar::end_of_month_day(year,month);
      date end_of_month(year,month,day);

      //Iterate thru by months --
      month_iterator mitr(end_of_month,1);
      date start_of_next_year(year+1, Jan, 1);
      //loop thru the days and print each one
      while (mitr < start_of_next_year){
        std::cout << to_simple_string(*mitr) << std::endl;
        ++mitr;
      }

    }
    catch(...) {
      std::cout << "Invalid Date Entered" << std::endl;
    }
    return 0;

  }

    ]]>
  </programlisting>
</section>