gistfile1.txt

puts 'Enter a starting year:'
startingyear= gets.chomp
puts 'Starting year is now ' + startingyear
puts 'Now enter an ending year'
endingyear = gets.chomp
puts 'Ending year is now ' + endingyear
 
startingyear.to_i.upto(endingyear.to_i) do |i|
      if(i % 4 == 0 AND i % 100 != 0)
	puts i
      end
end