Starting Out with C++: Early Objects (9th Edition)
Starting Out with C++: Early Objects (9th Edition)
9th Edition
ISBN: 9780134400242
Author: Tony Gaddis, Judy Walters, Godfrey Muganda
Publisher: PEARSON
bartleby

Concept explainers

Expert Solution & Answer
Book Icon
Chapter 17, Problem 1RQE
Program Description Answer

The “head pointer” points to the first node in a linked list.

Expert Solution & Answer
Check Mark

Explanation of Solution

Linked list:

Linked list is a linear and dynamic data structure which is used to organize data; it contains sequence of elements which are connected together in memory to form a chain. The every element of linked list is called as a node.

Head pointer:

The purpose of head pointer is to point the node of head node or first node in the linked list and it is also called as “list head”; if the head pointer points to a null value, then it is considered that the list is empty.

Graphical representation of head pointer:

The graphical representation of head pointer is as follows:

Starting Out with C++: Early Objects (9th Edition), Chapter 17, Problem 1RQE

Want to see more full solutions like this?

Subscribe now to access step-by-step solutions to millions of textbook problems written by subject matter experts!
Students have asked these similar questions
struct node{ int a; struct node * nextptr; };   Write two functions. One for inserting new values to a link list that uses the given node structure. void insert(struct node **head, int value); Second function is called to count the number of even numbers in the link list. It returns an integer that represents the number of even numbers. int countEvenNumbers(struct node *head); Write a C program that reads a number of integers from the user and insert those integers into a link list (use insert function). Later pass the head pointer of this link list to a function called countEvenNumbers. This function counts and returns the number of even numbers in the list. The returned value will be printed on the screen. Note 1: Do not modify the function prototypes.   Sample Input1:          Sample Output1: 45 23 44 12 37 98 33 35 -1 3   Sample Input2:          Sample Output2: 11 33 44 21 22 99 123 122 124 77 -1 4
When removing curNode from a doubly-linked list with at least 2 elements, the list's tail may be assigned with _____. Group of answer choices   curNode   curNode's predecessor   curNode's successor   null
class Node:  def __init__(self, e, n):    self.element = e    self.next = n class LinkedList:    def __init__(self, a):  #  Design the constructor based on data type of a. If 'a' is built in python list then  #  Creates a linked list using the values from the given array. head will refer  #  to the Node that contains the element from a[0]  #  Else Sets the value of head. head will refer  # to the given LinkedList   # Hint: Use the type() function to determine the data type of a    self.head = None    # To Do        # Count the number of nodes in the list  def countNode(self):    # To Do        # Print elements in the list  def printList(self):    # To Do       # returns the reference of the Node at the given index. For invalid index return None.  def nodeAt(self, idx):    # To Do
Knowledge Booster
Background pattern image
Computer Science
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, computer-science and related others by exploring similar questions and additional content below.
Similar questions
SEE MORE QUESTIONS
Recommended textbooks for you
Text book image
Systems Architecture
Computer Science
ISBN:9781305080195
Author:Stephen D. Burd
Publisher:Cengage Learning
Text book image
C++ Programming: From Problem Analysis to Program...
Computer Science
ISBN:9781337102087
Author:D. S. Malik
Publisher:Cengage Learning