5. (Sum the digits in an integer) Write a function that computes the sum of the digitsin an integer. Use the following function header:defsumDigits(n): For example, sumDigits(234)returns 9(2+3+4).(Hint: Use the %operator to extract digits, and the //operator to remove the extracted digit. For instance, to extract 4 from 234, use 234 % 10 (=4). To remove 4 from 234, use 234 // 10(=23). Use a loop to repeatedly extract and remove the digits until all the digits are extracted.) Write a test program that prompts the user to enter an integer and displays the sum of all its digits.