#include <iostream>
#include <string>
#include <fstream>
using namespace std;
class book
{
public:
string title;
string author;
string publisher;
int year;
string isbn;
book* next;
book(string, string, string, int, string, book*);
};
book::book(string tempTitle, string tempAuthor, string tempPublisher, int tempYear, string tempIsbn, book* tempNext)
{
title=tempTitle;
author=tempAuthor;
publisher=tempPublisher;
year=tempYear;
isbn=tempIsbn;
next=tempNext;
}
typedef book* bookPtr;
void getline(istream &stream, string &str, char delimiter)
{ char temp[500];
stream.get(temp, 500, delimiter);
stream.ignore(500, delimiter);
str = temp;
}
void getline(istream &stream, int &num, char delimiter)
{ int temp;
stream >> temp;
stream.ignore(500, delimiter);
num= temp;
}
void readFile(bookPtr &root);
void insert (bookPtr &root);
void delTitle(bookPtr &root);
bookPtr locateNode(bookPtr temp, string titl);
void delIsbn(bookPtr &root);
bookPtr locateNodeIsbn(bookPtr temp, string isb);
void searchIsbn(bookPtr temp);
void printList(bookPtr temp);
void printAuthor(bookPtr temp);
void saveFile(bookPtr temp);
int countNodes(bookPtr temp);
void readFile(bookPtr &root)
{
int numBooks, yea;
string titl, aut, pub, isb;
ifstream infile ("books.txt", ios::in);
infile >> numBooks;
infile.ignore(500,'\n');
for (int count = 0; count < numBooks; count++)
{
getline(infile, titl, '\n');
getline(infile, aut, '\n');
getline(infile, pub, '\n');
getline(infile,yea, '\n');
getline(infile, isb, '\n');
root = new book (titl, aut, pub, yea, isb, root);
}
}
void insert (bookPtr &root)
{
string titl, aut, pub, isb;
int yea;
cout << "Title:\t\t\t";
cin.ignore(500,'\n');
getline(cin, titl, '\n');
cout << "Author:\t\t\t";
getline(cin, aut, '\n');
cout << "Publisher:\t\t";
getline(cin,pub, '\n');
cout << "Year:\t\t\t";
getline(cin,yea, '\n');
cout << "ISBN:\t\t\t";
getline(cin, isb, '\n');
root = new book (titl, aut, pub, yea, isb, root);
}
void delTitle(bookPtr &root)
{
string titl;
cout << "Book Title:\t\t\t";
cin.ignore(500,'\n');
getline(cin, titl, '\n');
bookPtr p = locateNode(root, titl);
if (p == NULL)
cout << "\nDeletion cannot be done.\n\n";
else if (root == p)
root = p->next;
else
{
bookPtr q = root;
while (q->next != p)
q = q->next;
q->next = p->next;
}
delete p;
}
bookPtr locateNode(bookPtr temp, string titl)
{
while (temp != NULL)
{
if (temp->title == titl)
{
return temp;
}
temp = temp->next;
}
return NULL;
}
void delIsbn(bookPtr &root)
{
string isb;
cout << "Book ISBN:\t\t\t";
cin.ignore(500,'\n');
getline(cin, isb, '\n');
bookPtr p = locateNodeIsbn(root, isb);
if (p == NULL)
cout << "\nDeletion cannot be done.\n\n";
else if (root == p)
root = p->next;
else
{
bookPtr q = root;
while (q->next != p)
q = q->next;
q->next = p->next;
}
delete p;
}
bookPtr locateNodeIsbn(bookPtr temp, string isb)
{
while (temp != NULL)
{
if (temp->isbn == isb)
{
return temp;
}
temp = temp->next;
}
return NULL;
}
void searchIsbn(bookPtr temp)
{
string isb;
cout << "Book ISBN:\t\t\t";
cin.ignore(500,'\n');
getline(cin, isb, '\n');
while (temp != NULL)
{
if (isb == temp->isbn)
{
cout << temp->title << "\n";
cout << temp->author << "\n";
cout << temp->publisher << "\n";
cout << temp->year << "\n";
cout << temp->isbn << "\n\n";
}
temp = temp->next;
}
cout << "\n";
}
void printList(bookPtr temp)
{
while (temp != NULL)
{
cout << temp->title << "\n";
cout << temp->author << "\n";
cout << temp->publisher << "\n";
cout << temp->year << "\n";
cout << temp->isbn << "\n\n";
temp = temp->next;
}
cout << "\n";
}
void printAuthor(bookPtr temp)
{
string aut;
cout << "Author name:\t\t\t";
cin.ignore(500,'\n');
getline(cin, aut, '\n');
while (temp != NULL)
{
if (temp->author == aut)
{
cout << temp->title << "\n";
cout << temp->author << "\n";
cout << temp->publisher << "\n";
cout << temp->year << "\n";
cout << temp->isbn << "\n\n";
}
temp = temp->next;
}
cout << "\n";
}
void saveFile(bookPtr temp)
{
int count = countNodes(temp);
ofstream outFile("saved.txt",ios::out);
outFile << count << "\n";
while (temp != NULL)
{
outFile << temp->title << "\n";
outFile << temp->author << "\n";
outFile << temp->publisher << "\n";
outFile << temp->year << "\n";
outFile << temp->isbn << "\n";
temp = temp->next;
}
cout << "\n";
}
int countNodes(bookPtr temp)
{
int countB = 0;
while (temp != NULL)
{
countB++;
temp = temp->next;
}
return countB;
}
int main()
{
int choice;
bookPtr root = NULL;
readFile(root);
do
{
cout << "\t\t<<=========================>>";
cout << "\n\t\t>>LIBRARY MANAGEMENT SYSTEM<<";
cout << "\n\t\t<<=========================>>";
cout << "\n\nMenu: Select your option\n\n";
cout << "(1) Add a book to the list\n";
cout << "(2) Delete a book based on Title\n";
cout << "(3) Delete a book based on ISBN\n";
cout << "(4) Search for a book by ISBN.\n";
cout << "(5) List all books.\n";
cout << "(6) List all books by an author.\n";
cout << "(7) Quit.\n\n";
cout << "Enter your choice ---> ";
cin >> choice;
if (1 <= choice && choice <= 6)
{
switch (choice)
{
case 1:
insert(root);
break;
case 2:
delTitle(root);
break;
case 3:
delIsbn(root);
break;
case 4:
searchIsbn(root);
break;
case 5:
printList(root);
break;
case 6:
printAuthor(root);
break;
default:
cout << "Invalid choice. Enter again.\n\n";
break;
}
}
}
while (choice != 7);
saveFile(root);
return 0;
} Write, Run & Share C++ code online using OneCompiler's C++ online compiler for free. It's one of the robust, feature-rich online compilers for C++ language, running on the latest version 17. Getting started with the OneCompiler's C++ compiler is simple and pretty fast. The editor shows sample boilerplate code when you choose language as C++ and start coding!
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cout << "Hello " << name;
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}