input: Write a function to determine whether a given number is even or odd. The function should return "Even" if the number is even and "Odd" if the number is odd.
  assert even_or_odd(4) == "Even"
  assert even_or_odd(7) == "Odd"
  assert even_or_odd(0) == "Even"
  assert even_or_odd(-3) == "Odd"
  assert even_or_odd(-6) == "Even"
output: def even_or_odd(n):
      return "Even" if n % 2 == 0 else "Odd"