Which of the following is the correct code for the destructor for a class that h

Question

Which of the following is the correct code for the destructor for a class that holds information in a linked list? node* rmptr: while(head != NULL){ rmptr = head: head - head- > link(): delete rmptr: } node*rmptr: while(head != NULL){ rmptr = head: head = head- > link(): delete head: } delete [] head: node* rmptr: while(head!- NULL){ head = rmptr: head = head- > link(): delete rmptr: } The distinction between a set and a multiset is that a multiset allows duplicates. a multiset is in the library a multiset is ordered. a multiset has an iterator.

Explanation / Answer

The correct answer is:

node *rmptr;

while(head!=NULL)

{

rmptr = head;

head = head->link();

delete rmptr;

}

Because rmptr points to the courrent node while head preserves the address of next node. Hence whole list can be destroyed successfully.

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