5. Interrupting the repetition

• Calculate the sum of integers until zero is entered

sum = 0 while True: x = int(input("Enter a number (0 to exit): ")) if x == 0: break sum = sum + x print("Sum: %d" %sum)

• Calculate the average of entered numbers until zero is entered

sum = 0 n = 0 while True: x = int(input("Enter a number (0 to exit): ")) if x == 0: break else: n = n + 1 sum = sum + x print("Average: %5.2f" %(sum / n))

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