grieg.rb

#!/usr/bin/env ruby

class Char
  attr_reader :str, :dex, :int
  def initialize
    @str = 1
    @dex = 1
    @int = 1
  end
end

class Warrior < Char
  def initialize
    super
    @str += 2
    @dex += 1
  end
end

class Thief < Char
  def initialize
    super
    @dex += 2
    @int += 1
  end
end

player = Thief.new
p player.int # ⇒ 2