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

      From cppreference.com
      <cpp‎ |chrono‎ |year
       
       
      Date and time library
       
       
      constexprstd::chrono::year operator+()noexcept;
      		 (1)(since C++20)
      constexprstd::chrono::year operator-()noexcept;
      		 (2)(since C++20)

      Applies the unary operators to the year value.

      1) Returns a copy of*this.
      2) Returns ayear whose year value is the negation of that of*this.

      [edit]Return value

      1)*this
      2)std::chrono::year(-int(*this))

      [edit]Example

      Run this code
      #include <chrono>#include <iostream> int main(){constexprstd::chrono::year y{2020};constexprauto ny=-y;std::cout<<"The year "<<(int)y<<" negated is "<<(int)ny<<'\n';}

      Output:

      The year 2020 negated is -2020
      Retrieved from "https://en.cppreference.com/mwiki/index.php?title=cpp/chrono/year/operator_sign&oldid=157529"
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