input: Write a function to generate an acronym from a given name.
  assert make_acronym("Oscar Thomas") == "OT"
  assert make_acronym("National Aeronautics and Space Administration") == "NASA"
  assert make_acronym("International Business Machines") == "IBM"
output: def make_acronym(name):
      return ''.join(word[0].upper() for word in name.split())