function isLeap= leap_year(year)
    if mod(year, 4) == 0
        if mod(year, 100) == 0
            if mod(year, 400) == 0
                fprintf("leap Year");
            else
                fprintf("Not Leap Year")
            end
        else
            isLeap = true;
        end
    else
         fprintf("Not Leap Year")
    end
end