std::chrono::year:: is_leap

Determina si * this representa un año bisiesto en el calendario gregoriano proléptico .

* this representa un año bisiesto si el valor del año almacenado

• es divisible por 4 y no divisible por 100; o
• es divisible por 400.

Valor de retorno

true si * this representa un año bisiesto, de lo contrario false .

Ejemplo

#include <chrono>
#include <iostream>
int main()
{
    using namespace std::chrono_literals;
    for (const std::chrono::year y : {2020y, 2021y, 2000y, 3000y})
    {
        if (const int iy{static_cast<int>(y)}; y.is_leap())
            std::cout << iy << " is a leap year because it is divisible by "
                      << (iy % 400 == 0 ? "400\n" : "4 and not divisible by 100\n");
        else
            std::cout << iy << " is not a leap year\n";
    }
}

2020 is a leap year because it is divisible by 4 and not divisible by 100
2021 is not a leap year
2000 is a leap year because it is divisible by 400
3000 is not a leap year