std::chrono::month

C++

Language

Headers

Freestanding and hosted implementations

Named requirements

Language support library

Concepts library (C++20)

Diagnostics library

Utilities library

Strings library

Containers library

Algorithms library

Iterators library

Numerics library

Input/output library

Localizations library

Regular expressions library (C++11)

Atomic operations library (C++11)

Thread support library (C++11)

Filesystem library (C++17)

Technical Specifications

Utilities library

Type support (basic types, RTTI, type traits)
Dynamic memory management
Error handling
Program utilities
Variadic functions
Library feature-test macros
Date and time
Function objects
initializer_list (C++11)
bitset
hash (C++11)
integer_sequence (C++14)
Relational operators (deprecated)
rel_ops::operator!=rel_ops::operator>rel_ops::operator<=rel_ops::operator>=
Comparisons (C++20)
strong_order weak_order partial_order strong_equal weak_equal	strong_ordering weak_ordering partial_ordering strong_equality weak_equality	is_eqis_neqis_ltis_lteqis_gtis_gteq
common_comparison_category
Common vocabulary types
pair tuple (C++11) apply (C++17) make_from_tuple (C++17)	optional (C++17) any (C++17) variant (C++17)
Swap, forward and move
swap
exchange (C++14)
forward (C++11)
move (C++11)
move_if_noexcept (C++11)
Elementary string conversions
to_chars (C++17)
from_chars (C++17)
chars_format (C++17)
Type operations
declval (C++11)
as_const (C++17)

Date and time utilities

duration (C++11) time_point (C++11) time_of_day (C++20)	clock_time_conversion (C++20) clock_cast (C++20)
Clocks
system_clock (C++11) steady_clock (C++11) high_resolution_clock (C++11) is_clock (C++20)	utc_clock (C++20) tai_clock (C++20) gps_clock (C++20) file_clock (C++20) local_t (C++20)
Calendars
day (C++20) month (C++20) year (C++20) weekday (C++20) operator/ (C++20) year_month_day (C++20) year_month_day_last (C++20) year_month_weekday (C++20) year_month_weekday_last (C++20)	weekday_indexed (C++20) weekday_last (C++20) month_day (C++20) month_day_last (C++20) month_weekday (C++20) month_weekday_last (C++20) year_month (C++20)
Time zones
tzdb (C++20) tzdb_list (C++20) get_tzdbget_tzdb_listreload_tzdbremote_version (C++20)(C++20)(C++20)(C++20)	time_zone (C++20) locate_zone (C++20) current_zone (C++20) zoned_time (C++20) link (C++20) leap (C++20)
C-style date and time

std::chrono::month

Member functions

month::month

month::operator++month::operator--

month::operator+=month::operator-=

month::operator unsigned

month::ok

Nonmember functions

operator==operator!=operator<operator<=operator>operator>=

operator+operator-

operator<<

to_stream

from_stream

Defined in header <chrono>
class month;		(since C++20)
inline constexpr std::chrono::month January{1};		(since C++20)
inline constexpr std::chrono::month February{2};		(since C++20)
inline constexpr std::chrono::month March{3};		(since C++20)
inline constexpr std::chrono::month April{4};		(since C++20)
inline constexpr std::chrono::month May{5};		(since C++20)
inline constexpr std::chrono::month June{6};		(since C++20)
inline constexpr std::chrono::month July{7};		(since C++20)
inline constexpr std::chrono::month August{8};		(since C++20)
inline constexpr std::chrono::month September{9};		(since C++20)
inline constexpr std::chrono::month October{10};		(since C++20)
inline constexpr std::chrono::month November{11};		(since C++20)
inline constexpr std::chrono::month December{12};		(since C++20)

The class month represents a month in a year. Its normal range is [1, 12], but it may hold any number in [0, 255]. Twelve named constants are predefined in the std::chrono namespace for the twelve months of the year.

month is a TriviallyCopyable StandardLayoutType.

Member functions

(constructor)	constructs a month (public member function)
operator++operator++(int)operator--operator--(int)	increments or decrements the month (public member function)
operator+=operator-=	adds or subtracts a number of months (public member function)
operator unsigned	retrieves the stored month value (public member function)
ok	checks if the stored month value is in the normal range (public member function)

Nonmember functions

operator==operator!=operator<operator<=operator>operator>=	compares two month objects (function)
operator+operator-	performs arithmetic on months (function)
operator<<	outputs a month into a stream (function template)
to_stream	outputs a month into a stream according to the provided format (function template)
from_stream	parses a month from a stream according to the provided format (function template)