std::chrono::month::operator++,std::chrono::month::operator– (3) Linux Manual Page

std::chrono::month::operator++,std::chrono::month::operator– – std::chrono::month::operator++,std::chrono::month::operator–

Synopsis

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};

Parameters

(none)

Return value

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

Notes

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

Example

 This section is incomplete
 Reason: no example

See also

adds or subtracts a number of months

operator+= (public member function)

operator-=
performs arithmetic on months

operator+  (function)

operator-