# std::chrono::year::operator++, std::chrono::year::operator--

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< cpp‎ | chrono‎ | year

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

Adds or subtracts 1 from the year value.

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

### Parameters

(none)

### Return value

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

### Notes

If the result would be outside the range [-32767, 32767], the actual stored value is unspecified.

### Example

| This section is incomplete Reason: no example

### See also

operator+=operator-= | adds or subtracts a number of years from a `year` (public member function)
operator+operator- | performs arithmetic on `year`s (public member function)

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