defmodule GuessingGame do

  def compare(_secret_number, :no_guess \\ :no_guess), do: "Make a guess"

  def compare(secret_number, guess) when secret_number == guess, do: "Correct"

  def compare(secret_number, guess) when abs(guess-secret_number) == 1, do: "So close"

  def compare(secret_number, guess) when guess > secret_number, do:  "Too high"

  def compare(secret_number, guess) when guess < secret_number, do: "Too low"
end