# -*- coding: utf-8 -*-
"""
Created on Fri Sep  9 11:08:48 2022

@author: cpresser
"""

# Sentinel loop
# Allow user to enter numbers until they enter 0
# output sum and average

#1. Initialization:
# get a number from the user. Use input()
# set sum to 0
value = input("Enter a number (0 to quit): ")
sum = 0
n = 0  #start counting the number of numbers

#2. Condition (for the while)
# keep going as long as the number is not 0
# not equal:   != (bang equal)
while int(value) != 0:
#while value != "0":   #compare to string 0

#4. Repetition
# add the number to sum
    sum = sum + int(value)
    n = n + 1  #added one more number
    
#3. Step
# ask for the next number. Use input()
    value = input("Enter a number (0 to quit): ")


#AFTER THE LOOP
# print sum and average
print(f"The sum is {sum}.")
print(f"The average is {sum/n}.")