Why does our node class have two versions of the link member function? One is public, the other is private. One is to use with a const pointer, the other with a regular pointer. One returns the forward link, the other returns the backward link. One returns the data, the other returns a pointer to the next node.

Why does our node class have two versions of the link member function? One is public, the other is private. One is to use with a const pointer, the other with a regular pointer. One returns the forward link, the other returns the backward link. One returns the data, the other returns a pointer to the next node.

C++ Programming: From Problem Analysis to Program Design

8th Edition

ISBN:9781337102087

Author:D. S. Malik

Publisher:D. S. Malik

Chapter17: Linked Lists

Section: Chapter Questions

Problem 3SA

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Consider the following struct declaration that defines a node of a linked link. struct Node{ char ch; struct Node* link; }; Consider the linked list in Figure 1. Suppose head and temp are Node type pointers. The head node of the linked list is pointed by the head pointer. Each node stores one character type data as shown in Figure 1. What will be the output of the following pseudocode? foo(head) 1.if head is NULL a. return 2. temp = head 3. foo(temp->link) 4. print temp->ch
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