input: Write a function that takes any number of integer arguments and returns their sum. For example:
  
  assert sum_ints(3, 5, 7) == 15
  assert sum_ints(10, 20, 30) == 60
  assert sum_ints(-1, 1, 0) == 0
  assert sum_ints() == 0
  assert sum_ints(2) == 2
  
  def sum_ints(*args):
      total = 0
      for num in args:
          total += num
      
      return total
output: def sum_ints(*args):
      total = 0
      for num in args:
          total += num
      
      return total