The user enters integers one per line, the sequence ends with the number 0. Anything after 0 is not part of the sequence. Write a program that prints the sum of all terms in a given sequence.

def add_all():
  num = int(input('Enter an integer: '))
  sum = 0

  while num != 0:
    sum = sum + num
    num = int(input('Enter an integer: '))
  return sum

add_all()