Answer from cs61c-es (Meng Chang Bruce Lin 16075852) for Question 2
#include
int main ()
{
  int n = 27;
  setTo5 (&n);
  printf ("n = %d\n", n);
  return 0;
}

void setTo5 (int *p) /*declare a integer pointer p*/
{
  *p = 5;            /*set the content of n to 5*/
                       
}