Question: Write a program that takes a positive number as input and then calculate the sum of its digits. For instance, if the number is 295810, the sum of digits is 25 (2+9+5+8+1+0).

Sample Output for Question:

Enter a positive integer: 295810

The sum of digits is 25.

Hint: You may find simple arithmetic operators / (division) and % (remainder) helpful to get each digit of a positive integer.