NAME

std::chrono::year_month_day_last::year_month_day_last - std::chrono::year_month_day_last::year_month_day_last

Synopsis

constexpr year_month_day_last( const std::chrono::year& y, (since C++20)
const std::chrono::month_day_last& mdl ) noexcept;

Constructs a year_month_day_last object storing the year y and the month
mdl.month(). The constructed object represents the last day of that year and month.

Notes

A year_month_day_last can also be created by combining a std::chrono::year_month
with std::chrono::last using operator/.

Example

// Run this code

#include <chrono>
#include <iostream>

int main()
{
std::cout << "All last days of months of a given year: \n";

constexpr std::chrono::year year{2021};

for (int i{1}; i <= 12; ++i) {
const std::chrono::month_day_last mdl{std::chrono::month(i) / std::chrono::last};
const std::chrono::year_month_day_last ymdl{year, mdl};
std::cout << ymdl << " day: " << ymdl.day() << '\n';
}
}

Possible output:

All last days of months of a given year:
2021/Jan/last day: 31
2021/Feb/last day: 28
2021/Mar/last day: 31
2021/Apr/last day: 30
2021/May/last day: 31
2021/Jun/last day: 30
2021/Jul/last day: 31
2021/Aug/last day: 31
2021/Sep/last day: 30
2021/Oct/last day: 31
2021/Nov/last day: 30
2021/Dec/last day: 31

See also

operator/ conventional syntax for Gregorian calendar date creation
(C++20) (function)