Answer from cs61c-ba (Zhou Zhou 16250641) for Question 2
 #include <stdio.h>

void setTo5 (int *);

  int main ( ) {
      int n = 27;
      setTo5(&n);
      printf ("n = %d\n", n);  /* should print n = 5 */
      return 0;
  }
  void setTo5(int * intptr) {
       *intptr = 5;
  }