'''Python program for sum of digits of an integer
'''
#grab the number
num = int(input("Enter a number: "))
sum = 0

#grab the last digit, add to sum. 
#Divide by 10 to get the next digit. Keep going until number is 0
while num > 0:
    rem = int(num % 10)
    sum = sum + rem
    num = int(num / 10)

#print the answer
print("The sum is ", sum)