input: Write a function to check whether a given number is even or odd. The function should print "Even" if the number is even, and "Odd" if the number is odd.
  
  def is_even(n):
      if n % 2 == 0:
          print("Even")
      else:
          print("Odd")
  
  assert is_even(4) == None
  assert is_even(5) == None
output: def is_even(n):
      if n % 2 == 0:
          print("Even")
      else:
          print("Odd")