Chapter 17: Problem 7
In a(n) __________ list, the last node has a pointer to the first node.
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To indicate that a linked list is empty, you should set the pointer to its head to the value __________.
Write a function void printSecond(ListNode *ptr) that prints the value stored in the second node of a list passed to it as parameter. The function should print an error message and terminate the program if the list passed to it has less than two nodes.
Write a function ListNode *ListConcat(ListNode *list1, ListNode *list2) That concatenates the items in list2 to the end of list1 and returns the resulting list.
Write a function double lastValue(ListNode *ptr) that returns the value stored in the last node of a nonempty list passed to it as parameter. The function should print an error message and terminate the program if the list passed to it is empty.
Write a function ListNode *removeFirst(ListNode *ptr) that is passed a linked list as parameter, and returns the tail of the list: that is, it removes the first node and returns what is left. The function should deal locate the storage of the removed node. The function returns NULL if the list passed to it is empty.
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