ceph/src/boost/libs/date_time/xmldoc/ex_print_month.xml

   1 <?xml version="1.0" encoding="utf-8"?>
   2 <!DOCTYPE library PUBLIC "-//Boost//DTD BoostBook XML V1.0//EN"
   3 "../../../tools/boostbook/dtd/boostbook.dtd">
   4
   5 <!-- Copyright (c) 2001-2004 CrystalClear Software, Inc.
   6      Subject to the Boost Software License, Version 1.0.
   7      (See accompanying file LICENSE_1_0.txt or  http://www.boost.org/LICENSE_1_0.txt)
   8 -->
   9
  10 <section id="date_time.examples.print_month">
  11   <title>Print Month</title>
  12
  13   <para>
  14     Simple utility to print out days of the month with the days of a month. Demontstrates date iteration (date_time::date_itr).
  15   </para>
  16   <programlisting>
  17     <![CDATA[
  18   /* This example prints all the dates in a month. It demonstrates
  19    * the use of iterators as well as functions of the gregorian_calendar
  20    *
  21    * Output:
  22    * Enter Year: 2002
  23    * Enter Month(1..12): 2
  24    * 2002-Feb-01 [Fri]
  25    * 2002-Feb-02 [Sat]
  26    * 2002-Feb-03 [Sun]
  27    * 2002-Feb-04 [Mon]
  28    * 2002-Feb-05 [Tue]
  29    * 2002-Feb-06 [Wed]
  30    * 2002-Feb-07 [Thu]
  31    */
  32
  33   #include "boost/date_time/gregorian/gregorian.hpp"
  34   #include <iostream>
  35
  36   int
  37   main()
  38   {
  39     std::cout << "Enter Year: ";
  40     int year, month;
  41     std::cin >> year;
  42     std::cout << "Enter Month(1..12): ";
  43     std::cin >> month;
  44
  45     using namespace boost::gregorian;
  46     try {
  47       //Use the calendar to get the last day of the month
  48       int eom_day = gregorian_calendar::end_of_month_day(year,month);
  49       date endOfMonth(year,month,eom_day);
  50
  51       //construct an iterator starting with firt day of the month
  52       day_iterator ditr(date(year,month,1));
  53       //loop thru the days and print each one
  54       for (; ditr <= endOfMonth; ++ditr) {
  55   #if defined(BOOST_DATE_TIME_NO_LOCALE)
  56         std::cout << to_simple_string(*ditr) << " ["
  57   #else
  58         std::cout << *ditr << " ["
  59   #endif
  60                   << ditr->day_of_week() << "]"
  61                   << std::endl;
  62       }
  63     }
  64     catch(std::exception& e) {
  65
  66       std::cout << "Error bad date, check your entry: \n"
  67                 << "  Details: " << e.what() << std::endl;
  68     }
  69     return 0;
  70   }
  71
  72     ]]>
  73   </programlisting>
  74 </section>