4. What will be the value of the variable s after the while loop? Show your work. (10 points) int s = 0; int x = 919; while (x > 0) { s += x%10; x /= 10; } 5. What is the value of n after the while loop? Explain. (10 points) int c, n; n = 0; while ((c getchar()) != EOF) if (c == == ' ') ++n;