Test your programs with different values. For now, the speed of your programs is irrelevant. So don't spend time on optimization Your programs must be well structured. Use ctrl-x t in Emacs or a similar command in your editor of choice to pretty-print it Marks are assigned to functionality and program appearance In case your program hangs, use ctrl-c to terminate it Submit pl.c p2.c on eClass by the end of the lab You can submit as often as you want. We will only consider the last submission for marking Problem 1 (5 marks): Iterated Digit Sum In file pl.c write a function called iterated_digit_sum that computes the sum of base-10 digits of a given unsigned int x and repeats that computation for the result until the value doesn't change anymore Examples: iterated_digit_sum (0) iterated_digit_sum ( 26) = 8 iterated_digit_sum(11111) = 5 iterated_digit_sum( 22222) = 1 In function main() provide code to test your function You can't use functions from math.h