| /* Provides a simple example of using a date_generator, and simple |
| * mathematical operatorations, to calculate the days since |
| * New Years day of this year, and days until next New Years day. |
| * |
| * Expected results: |
| * Adding together both durations will produce 366 (365 in a leap year). |
| */ |
| #include <iostream> |
| #include "boost/date_time/gregorian/gregorian.hpp" |
| |
| int |
| main() |
| { |
| |
| using namespace boost::gregorian; |
| |
| date today = day_clock::local_day(); |
| partial_date new_years_day(1,Jan); |
| //Subtract two dates to get a duration |
| days days_since_year_start = today - new_years_day.get_date(today.year()); |
| std::cout << "Days since Jan 1: " << days_since_year_start.days() |
| << std::endl; |
| |
| days days_until_year_start = new_years_day.get_date(today.year()+1) - today; |
| std::cout << "Days until next Jan 1: " << days_until_year_start.days() |
| << std::endl; |
| return 0; |
| }; |
| |
| |
| /* Copyright 2001-2004: CrystalClear Software, Inc |
| * http://www.crystalclearsoftware.com |
| * |
| * 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) |
| */ |
| |
