printf "͜Μʹͪɻ%sઌੜ\n" name instance Say Hello Friend where say _ (Friend name) = printf "͋ %s\n" name instance Say Goodbye Teacher where say _ (Teacher name) = printf "%sઌੜɺ͞Α͏ͳΒ\n" name instance Say Goodbye Friend where say _ (Friend name) = printf "·ͨͶ %s\n" name D 動作を実装する部分