roman_numerals.rb

def convert_to_roman()
options = {}
puts "Enter a number"
num = gets.chomp.to_i
puts "Modern numerals? (Y/N)"
result = gets.chomp
if
  result == "Y"
  options[:modern] = true
elsif
  result == "N"
  options[:modern] = false
else
  puts "sorry, not a valid value"
  exit
end

  numeral = ""
    $letters.each do |key,value|
      numeral += value * (num/key)
      num -= key * (num/key)
    end

  if options.has_key?(:modern) && options[:modern] == true
    $modern_letters.each do |old_nums, new_nums|
      numeral.sub!(old_nums, new_nums)
    end
  end

p numeral
end

convert_to_roman()