Computer Science, asked by aiman417249, 1 month ago

Write a c++ program for a library automation which gets ISBN number, name, author and publication year of the books in the library. The status will be filled by the program as follows:
if publication year before 1985 then the book will not be added in the list. The information about the books should be stored inside a linked list. The program should have a menu and the user inserts, displays and deletes the elements from the menu selecting options.
The following menu should be used in the program
Press 1. to insert a book
Press 2. to display the book list
Press 3. to delete a book from list

Answers

Answered by anjal0182
0

Explanation:

if publication year before 1985 then the book will not be added in the list. The information about the books should be stored inside a linked list. The program should have a menu and the user inserts, displays and deletes the elements from the menu selecting options.

The following menu should be used in the program

Press 1. to insert a book

Press 2. to display the book list

Press 3. to delete a book from list

Answered by dreamrob
2

Program:

#include<bits/stdc++.h>

#include<iostream>

#include<string.h>

using namespace std;

class Node

{

public:

 string ISBN, Name, Author;

 int Year;

 Node* next;

 

 Node()

 {

  ISBN = "";

  Name = "";

  Author = "";

  Year = 0;

  next = NULL;

 }

 Node(string i , string n , string a , int y)

 {

  ISBN = i;

  Name = n;

  Author = a;

  Year = y;

 }

};  

class SinglyLinkedList

{

public:

 Node* head;

 

 SinglyLinkedList()

 {

  head = NULL;

 }

 SinglyLinkedList(Node *n)

 {

  head = n;

 }

 

 Node* nodeExist(string n)

 {

  Node* temp = NULL;

   

  Node* ptr = head;

  while(ptr != NULL)

  {

   if(n.compare(ptr->Name) == 0)

   {

    temp = ptr;

   }

   ptr = ptr->next;

  }

  return temp;

 }

 

 Node* publication_year(int y)

 {

  Node* temp = NULL;

   

  if(y < 1985)

  {

   temp = head;

  }

  return temp;

 }

 

 void prependNode(Node* n)

 {

  if(nodeExist(n->Name) != NULL)

  {

   cout<<"Node Already exist with the same book name : "<<n->Name<<". Add another node with different book name."<<endl;

  }

  else if(publication_year(n->Year) != NULL)

  {

   cout<<"Book cannto be added because publication year is before 1985"<<endl;

  }

  else

  {

   n->next = head;

   head = n;

   cout<<"Book Added"<<endl;

  }

 }

 

 void deleteNode(string s)

 {

  if(head == NULL)

  {

   cout<<"Empty List! Nothing to be deleted"<<endl;

  }

  else

  {

   if(s.compare(head->Name) == 0)

   {

    head = head->next;

    cout<<"Book deleted from the list"<<endl;

   }

   else

   {

    Node* temp = NULL;

    Node* prevptr = head;

    Node* currentptr = head->next;

    while(currentptr != NULL)

    {

     if(s.compare(currentptr->Name) == 0)

     {

      temp = currentptr;

      currentptr = NULL;

     }

     else

     {

      prevptr = prevptr->next;

      currentptr = currentptr->next;

     }

    }

    if(temp != NULL)

    {

     prevptr->next = temp->next;

     cout<<"Book deleted from the list"<<endl;

    }

    else

    {

     cout<<"Book with such name does not exist"<<endl;

    }

   }

  }

 }

 

 void display()

 {

  if(head == NULL)

  {

   cout<<"Empty List"<<endl;

  }

  else

  {

   cout<<endl<<"Books List "<<endl;

   Node* temp = head;

   

   while(temp != NULL)

   {

    cout<<temp->ISBN<<"\t"<<temp->Name<<"\t"<<temp->Author<<"\t"<<temp->Year<<endl;

    temp = temp->next;

   }

  }

 }

};

int main()

{

SinglyLinkedList s;

int option;

string isbn, name, author;

int year;

do

{

 cout<<"\nWhat operation do you want to perform? Sellect Opton number.Enter 0 to exit."<<endl;

 cout<<"Press 1. to insert a book"<<endl;

 cout<<"Press 2. to display the book list"<<endl;

 cout<<"Press 3. to delete a book from list"<<endl;

 

 cin>>option;

 Node* n1 = new Node();

 

 switch(option)

 {

  case 0:

   break;

  case 1:

   cout<<"Enter the book details \n";

   cout<<"Enter ISBN : ";

   getline(cin, isbn);

   cout<<"Enter Book Name : ";

   getline(cin,name);

   cout<<"Enter Author Name : ";

   getline(cin,author);

   cout<<"Enter Publication Year : ";

   cin>>year;

   n1->ISBN = isbn;

   n1->Name = name;

   n1->Author = author;

   n1->Year = year;

   s.prependNode(n1);

   break;

  case 2:

   s.display();

   break;

  case 3:

   cout<<"Enter name of the book you want to delete : ";

   getline(cin, name);

   s. deleteNode(name);

   break;

  default:

   cout<<"Invalid option"<<endl;

 }

}

while(option != 0);

return 0;

}

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