rcx = 0x000000002b222450   rbx = 0x000000002a878af0
rsi = 0x000000002aa80d40   rdi = 0x00000000018853e8
rbp = 0x0000000000000010   rsp = 0x00000000018851f0
 r8 = 0x00000000018853e8    r9 = 0x0000000000009360

printf %%%02x `sed "s/./'& /g"`

f()(read -n1 c&&printf %%%02x \'$c&&f)

  if ascii_mode
    if a =~ /\d+/
      @active_stack.push(a.to_i)
    else
      raise BrainFlakError.new("Invalid integer in input", 0)
    end
  else
    @active_stack.push(a.ord)
  end

  if !ascii_mode
    numbers = input_file.read.gsub(/\s+/m, ' ').strip.split(" ").reverse
  else
    numbers = input_file.read.split("").map(&:ord)
  end

  def print(ascii_mode)
    @data.each do |value|
      print value
    end
    STDOUT.flush