def smiley(input)
  if input[:mood] == "happy"  #mood is the key, it also has to be a string
    return ":)"
  elsif input[:mood] == "sad"
    return ":("
  else
    return ":|"
  end
end


h1 = {:mood => "happy"}
h2 = {:mood => "sad"}
h3 = {:mood => "sentimental"}
puts smiley(h2)