input: Write a function to sort a list of strings in alphabetical order and print each string.
  assert sort_and_print(['cat', 'dog', 'apple', 'banana'])==None
  assert sort_and_print(['zebra', 'elephant', 'ant'])==None
  assert sort_and_print([])==None
output: def sort_and_print(strings):
      sorted_strings = sorted(strings)
      for s in sorted_strings:
          print(s)