Defined in header <chrono> | ||
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class year_month_day; | (since C++20) |
The class year_month_day represents a specific year, month, and day. It is a field-based time point, with a resolution of std::chrono::days. std::chrono::years- and std::chrono::months-oriented arithmetic are supported directly. An implicit conversion to and from std::chrono::sys_days allows std::chrono::days-oriented arithmetic to be performed efficiently.
year_month_day is a TriviallyCopyable StandardLayoutType.
constructs a year_month_day (public member function) |
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| modifies the time point by some number of months or years (public member function) |
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| accesses the year, month, and day stored in this object (public member function) |
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converts to a std::chrono::time_point (public member function) |
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checks if the year_month_day represents a valid date (public member function) |
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(C++20) | compares two year_month_day values (function) |
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(C++20) | adds or subtracts a year_month_day and some number of years or months (function) |
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(C++20) | outputs a year_month_day into a stream (function template) |
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(C++20) | parses a year_month_day from a stream according to the provided format (function template) |
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(C++20) | formatting support for year_month_day (class template specialization) |
#include <chrono>
#include <iostream>
int main()
{
const std::chrono::time_point now{std::chrono::system_clock::now()};
const std::chrono::year_month_day ymd{std::chrono::floor<std::chrono::days>(now)};
std::cout << "Current Year: " << static_cast<int>(ymd.year())
<< ", Month: " << static_cast<unsigned>(ymd.month())
<< ", Day: " << static_cast<unsigned>(ymd.day()) << '\n';
}Possible output:
Current Year: 2023, Month: 6, Day: 29
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