python #Program to find the sum of digits of an integer number num = int(input("Enter an integer number: ")) sum_digits = 0 original_num = num

while num > 0: digit = num % 10 sum_digits += digit num = num // 10

print("The sum of digits of", original_num, "is", sum_digits)

Output:

Enter an integer number: 12345 The sum of digits of 12345 is 15

Explanation:

The program begins by accepting an integer number from the user using the int(input()) function. A variable sum_digits is initialized to 0 to store the cumulative sum of digits.

Inside the while loop, the condition num > 0 ensures the loop continues until all digits are processed. The modulo operator (%) with 10 extracts the last digit of the number. This digit is added to sum_digits. Then, integer division (//) by 10 removes the last digit from the number.

For example, if the input is 12345, the loop extracts digits 5, 4, 3, 2, and 1 sequentially, adding them to get 15. The loop terminates when num becomes 0.