Answer from cs61c-cl (Hiroki Terashima 16032281) 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* n)
{
  *n = 5;
}