Question

What is the one statement that can be used to insert a new node at the head of a linked list. Assume that the list's head_pointer is called head_ptr and the that the data for the new node is called entry.

Answer 1

It would have to be a function call. To do that, you're new node's pointer (singly linked list) has to be set to the value of head_ptr and then head_ptr has to be set to point at your new node. That's two assignments. I don't know of any statement that will do that.