Log out Go to App
Go to App

Learning Materials

Features

Discover

Chapter 13: Problem 7

Suppose your program contains the following type definitions and pointer variable declarations: struct Node { double data; Node *next; }; typedef Node* Pointer; Pointer p1, p2; Suppose p1 points to a node of this type that is on a linked list. Write code that will make p1 point to the next node on this linked list. (The pointer p2 is for the next exercise and has nothing to do with this exercise.)

Short Answer

Expert verified
Answer: We can make the pointer variable p1 point to the next node in the linked list by updating its address to the address of the next node using the code: p1 = p1->next;

Step by step solution

01

Understanding the structure

Here, we have a struct Node with two attributes - data (a double type) and next (a pointer of type Node*). This next pointer will point to the next node in the linked list or to nullptr if it is the last node. We also have a typedef Pointer defined as the type Node* (pointer to a Node).
02

Declare pointer variables

We have two pointer variables, p1 and p2, which are declared as Pointer type. In this exercise, we are interested in p1, which currently points to a node in the linked list.
03

Update pointer p1 to next node

Since p1 is pointing to a node in the linked list, we can make it point to the next node by updating its address to the address of the next node. We can do this using the following C++ code: p1 = p1->next;

Unlock Step-by-Step Solutions & Ace Your Exams!

  • Full Textbook Solutions

    Get detailed explanations and key concepts

  • Unlimited Al creation

    Al flashcards, explanations, exams and more...

  • Ads-free access

    To over 500 millions flashcards

  • Money-back guarantee

    We refund you if you fail your exam.

Start your free trial

Over 30 million students worldwide already upgrade their learning with Vaia!

One App. One Place for Learning.

All the tools & learning materials you need for study success - in one app.

Get started for free

Most popular questions from this chapter

Given the following structure definition: struct ListNode { string item; int count; ListNode *link; }; ListNode *head = new ListNode; Write code to assign the string “Wilbur’s brother Orville” to the member item of the node pointed to by head.

A linked list is normally given by giving a pointer that points to the first node in the list, but an empty list has no first node. What pointer value is normally used to represent an empty list?

Suppose that your program contains the type definitions and code given in Self-Test Exercise 1. That code creates a node that contains the string "Sally" and the number \(18 .\) What code would you add in order to set the value of the member variable next of this node equal to NULL?

Choose an answer and explain it. For a large array and large list holding the same type objects, inserting a new object at a known location into the middle of a linked list compared with insertion in an array is a. More efficient b. Less efficient c. About the same d. Dependent on the size of the two lists

Give the definition of the copy constructor for the class Stack described in Display 13.17.
See all solutions

Recommended explanations on Computer Science Textbooks

Data Representation in Computer Science

Read Explanation

Theory of Computation

Read Explanation

Issues in Computer Science

Read Explanation

Problem Solving Techniques

Read Explanation

Computer Programming

Read Explanation

Big Data

Read Explanation
View all explanations

What do you think about this solution?

We value your feedback to improve our textbook solutions.

Study anywhere. Anytime. Across all devices.

Sign-up for free