std::chrono::year::is_leap

 

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std::chrono::year

Member functions

year::year

year::operator++year::operator--

year::operator+=year::operator-=

year::operator+year::operator-

year::is_leap

year::operator int

year::ok

year::min

year::max

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operator==operator<=>

operator+operator-

operator<<

from_stream

Helper classes

formatter<std::chrono::year>

 

constexpr bool is_leap() const noexcept;		(since C++20)

Determines if *this represents a leap year in the proleptic Gregorian calendar.

*this represents a leap year if the stored year value

• is divisible by 4 and not divisible by 100; or
• is divisible by 400.

Return value

true if *this represents a leap year, otherwise false.

Example

Run this code

#include <iostream>
#include <chrono>
 
int main()
{
 
    std::chrono::year y1{2020};
    y1.is_leap() ? 
        std::cout << "Year is a leap year" : std::cout << "Year is not a leap year";
        std::cout << "\n";
 
    std::chrono::year y2{2001};
    y2.is_leap() ? 
        std::cout << "Year is a leap year" : std::cout << "Year is not a leap year";
        std::cout << "\n";
 
}

Output:

Year is a leap year
Year is not a leap year