The Password widget replaces displayed characters with bullets to keep the password private.

Given the definitions,

``` int *p1, *p2; p1 = new int; p2 = new int; ``` You are to compare and contrast the two assignments. ``` a) p1 = p2; b) *p1 = *p2 ``` What will be an ideal response?

Which condition guarantees that a doubly linked list with head and tail nodes is empty?

a. head==NULL b. tail==NULL c. head==tail d. head->next==tail->prev e. none of the above