Answer from cs61c-ak (Tony Lai 15937131) for Question 2
void setTo5(int *p);


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

void setTo5(int *p){
*p = 5;
}