Use the declaration below to answer the following questions.

   node *p, *r, *s;
   p = NULL;
   s = new node;
   r = s;

1. Draw a diagram that illustrates each of the three ways to assign a pointer.

2. Show what each of the following statements do to its pointer diagram.

   p = p -> next; r = p; s = p -> next; p -> info = r -> info; p -> info = r -> next -> info; s -> next = p;

3. Write one statement using the -> notation, to make the change indicated by the dotted line.

   

4. node *p, *r,*s;
p = new node;
s = new node;
r = new node;
p -> next = r;
r -> next = s;
s -> next = p;
s -> info = 3;
p ->next -> next -> next -> info = 2;
s -> next -> next -> info = 1;
p = s -> next;
cout << p -> info << " " << s -> info << " " << r -> info;


5. node *p,*s;
s = new node;
p = new node;
p -> info = 7;
s->info = 8;
s -> next = p;
s -> next -> info = 5;
s -> next -> next = p;
p -> next -> info = 4;
s ->info = p -> next ->info;
cout << p -> info << " " << s -> next -> next -> info << " " << q -> info;

6. Write only 9 statements to form this diagram.