text: # @desc **len()** returns the length of a string.
  
  def strlen2(s, t):
      length = len(s) + len(t)
      return length
  
  
  def main():
      print(strlen2('Bike', 'grass'))
      print(strlen2('', ''))
      print(strlen2('56', ''))
      print(strlen2('Cat', 'Dog'))
      print(strlen2('Golf', 'Ball'))
  
  
  if __name__ == '__main__':
      main()
  