Starting Out with C++ from Control Structures to Objects (9th Edition)
Starting Out with C++ from Control Structures to Objects (9th Edition)
9th Edition
ISBN: 9780134498379
Author: Tony Gaddis
Publisher: PEARSON
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Chapter 18, Problem 2PC
Program Plan Intro

Linked List Operations

Program Plan:

“IntList.h”:

  • Include the required specifications into the program.
  • Define a class named “IntList”.
    • Declare the member variables “value” and “*next” in structure named “ListNode”.
    • Declare the constructor, destructor, and member functions in the class.

“IntList.cpp”:

  • Include the required header files into the program.
  • Define a function named “appendNode()” to insert the node at end of the list.
    • Declare the structure pointer variables “newNode” and “dataPtr” for the structure named “ListNode”.
    • Assign the value “num” to the variable “newNode” and assign null to the variable “newNode”.
    • Using “if…else” condition check whether the list is empty or not, if the “head” is empty then make a new node into “head” pointer. Otherwise, make a loop to find last node in the loop.
    • Assign the value of “dataPtr” into the variable “newNode”.
  • Define a function named “print()” to print the values in the list.
    • Declare the structure pointer “dataPtr” for the structure named “ListNode”.
    • Initialize the variable “dataPtr” with the “head” pointer.
    • Using “if…else” to check whether the list is empty or not, if the list is empty display an appropriate message on the screen.
      • Otherwise, make a loop “while” to display the values of the list.
  • Define a function named “insertNode()” to insert a value into the list.
    • Declare the structure pointer variables “newNode”, “dataPtr”, and “prev” for the structure named “ListNode”.
    • Make a “newNode” value into the received variable value “num”.
    • Use “if…else” condition to check whether the list is empty or not.
      • If the list is empty then initialize “head” pointer with the value of “newNode” variable.
      • Otherwise, make a “while” loop to test whether the “num” value is less than the list values or not.
      • Use “if…else” condition to initialize the value into list.
  • Define a function named “deleteNode()” to delete a value from the list.
    • Declare the structure pointer variables “dataPtr”, and “prev” for the structure named “ListNode”.
    • Use “if…else” condition to check whether the “head” value is equal to “num” or not.
      • Initialize the variable “dataPtr” with the value of the variable “head”.
      • Remove the value using “delete” operator and reassign the “head” value into the “dataPtr”.
      • If the “num” value not equal to the “head” value, then define the “while” loop to assign the “dataPtr” into “prev”.
      • Use “if” condition to delete the “prev” pointer.
  • Define the destructor to destroy the list values from the memory.
    • Declare the structure pointer variables “dataPtr”, and “nextNode” for the structure named “ListNode”.
    • Initialize the variable “dataPtr” with the “head” pointer.
    • Define a “while” loop to make the links of node into “nextNode” and remove the node using “delete” operator.

“main.cpp”:

  • Include the required header files into the program.
  • Declare an object named “obj” for the class “IntList”.
  • Make a call to functions for insert, append, and delete operations.
  • Make a call to the function “print” to display all the values in the list on the screen.

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C++ function Linked list   Write a function, to be included in an unsorted linked list class, called replaceItem, that will receive two parameters, one called olditem, the other called new item. The function will replace all occurrences of old item with new item (if old item exists !!) and it will return the number of replacements done.
Remove Duplicates This function will receive a list of elements with duplicate elements, this function should remove the duplicate elements in the list and return a list without duplicate elements. The elements in the returned list must be in the same order that they were found in the list the function received. A duplicate element is an element found more than one time in the specified list.
struct Node { int data; Node * next; }; Node • head; a. Write a function named addNode that takes in a variable of type int and inserts it at the head of the list. b. Write a function named removeNode that removes a node at the head of the list.
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