std::chrono::month::operator++, std::chrono::month::operator--

constexpr std::chrono::month& operator++() noexcept;
(1) (since C++20)
constexpr std::chrono::month operator++(int) noexcept;
(2) (since C++20)
constexpr std::chrono::month& operator--() noexcept;
(3) (since C++20)
constexpr std::chrono::month operator--(int) noexcept;
(4) (since C++20)

Adds or subtracts 1 from the month value, reducing the result modulo 12 to an integer in the range [1, 12].

1-2) Performs *this += std::chrono::months{1};
3-4) Performs *this -= std::chrono::months{1};



Return value

1,3) a reference to this month after modification
2,4) a copy of the month made before modification


After a call to one of these functions, ok() is always true.


See also

adds or subtracts a number of months
(public member function)
performs arithmetic on months

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