xtd 0.2.0
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date_time_day_of_year.cpp

Shows how to use xtd::date_time::date_time_day_of_year property.

#include <xtd/console>
#include <xtd/date_time>
#include <xtd/startup>
using namespace xtd;
class program {
public:
static auto main() {
auto dec31 = date_time {2010, 12, 31};
for (auto ctr = 0u; ctr <= 10u; ctr++) {
auto date_to_display = dec31.add_years(ctr);
console::write_line("{0:d}: day {1} of {2} {3}", date_to_display, date_to_display.day_of_year(), date_to_display.year(), date_time::is_leap_year(date_to_display.year()) ? "(Leap Year)" : "");
}
}
};
startup_(program::main);
// This code produces the following output :
//
// 12/31/2010: day 365 of 2010
// 12/31/2011: day 365 of 2011
// 12/31/2012: day 366 of 2012 (Leap Year)
// 12/31/2013: day 365 of 2013
// 12/31/2014: day 365 of 2014
// 12/31/2015: day 365 of 2015
// 12/31/2016: day 366 of 2016 (Leap Year)
// 12/31/2017: day 365 of 2017
// 12/31/2018: day 365 of 2018
// 12/31/2019: day 365 of 2019
// 12/31/2020: day 366 of 2020 (Leap Year)
Represents an instant in time, typically expressed as a date and time of day.
Definition date_time.h:85
date_time add_years(int32 value) const
Returns a new xtd::date_time that adds the specified number of years to the value of this instance.
#define startup_(main_method)
Defines the entry point to be called when the application loads. Generally this is set either to the ...
Definition startup.h:175
The xtd namespace contains all fundamental classes to access Hardware, Os, System,...
Definition xtd_about_box.h:10