gistfile1.txt

def leap_year?(year)
  
  if year % 4 == 0
    puts true
  elsif year % 100 == 0
    puts false
  elsif year % 100 == 0 && year % 400 == 0
    puts true
  elsif year % 4 == 0 && year % 100 == 0 && !(year % 400 == 0)
    puts false
  else 
    puts false
  end

end

puts leap_year?(1988)
puts leap_year?(1989)
puts leap_year?(1998)
puts leap_year?(3)