E -Library Management System

Last Updated : 20 Feb, 2024

In this article, we will discuss the approach to creating an E-Library Management System where the user has the following options:

Add book information.
Display book information.
To list all books of a given author.
To list the count of books in the library.

Functionalities Required:

If the user tries to add a book then the user must have to provide the below specific Information about the book:
- Enter Book Name:
- Enter Author Name:
- Enter Pages:
- Enter Price:
When the user tries to display all books of a particular author then the user must have to enter the name of the author:
- Enter the author's name:
The E-Library Management System must be also capable of counting all the books available in the library.

Note: Follow given link to build a Web application on Library Management System.

Below is the program to implement the E-Library Management System:

C++

// C++ code addition 

#include <iostream>
#include <string>

using namespace std;

// Create Structure of Library
struct library {
    string book_name;
    string author;
    int pages;
    float price;
};

// Driver Code
int main()
{
    // Create an array of structs
    library lib[100];

    string ar_nm, bk_nm;

    // Keep the track of the number of
    // of books available in the library
    int i, input, count;

    i = input = count = 0;

    // Iterate the loop
    while (input != 5) {

        cout << "\n\n********######"
             << "WELCOME TO E-LIBRARY "
             << "#####********\n";
        cout << "\n\n1. Add book information\n2. Display book information\n";
        cout << "3. List all books of given author\n";
        cout << "4. List the count of books in the library\n";
        cout << "5. Exit\n";

        // Enter the book details
        cout << "\n\nEnter one of the above: ";
        cin >> input;

        // Process the input
        switch (input) {

        // Add book
        case 1:

            cout << "Enter book name = ";
            cin >> lib[i].book_name;

            cout << "Enter author name = ";
            cin >> lib[i].author;

            cout << "Enter pages = ";
            cin >> lib[i].pages;

            cout << "Enter price = ";
            cin >> lib[i].price;
            count++;

            break;

        // Print book information
        case 2:
            cout << "you have entered the following information\n";
            for (i = 0; i < count; i++) {

                cout << "book name = " << lib[i].book_name;
                cout << "\t author name = " << lib[i].author;
                cout << "\t  pages = " << lib[i].pages;
                cout << "\t  price = " << lib[i].price << endl;
            }
            break;

        // Take the author name as input
        case 3:
            cout << "Enter author name : ";
            cin >> ar_nm;
            for (i = 0; i < count; i++) {

                if (ar_nm == lib[i].author)
                    cout << lib[i].book_name << " " << lib[i].author << " " << lib[i].pages << " " << lib[i].price << endl;
            }
            break;

        // Print total count
        case 4:
            cout << "\n No of books in library : " << count << endl;
            break;
        case 5:
            exit(0);
        }
    }
    return 0;
}

// The code is contributed by Nidhi goel.

// C program for the E-library
// Management System
#include <stdio.h>
#include <stdlib.h>
#include <string.h>

// Create Structure of Library
struct library {
    char book_name[20];
    char author[20];
    int pages;
    float price;
};

// Driver Code
int main()
{
    // Create a instance
    struct library lib[100];

    char ar_nm[30], bk_nm[30];

    // Keep the track of the number of
    // of books available in the library
    int i, input, count;

    i = input = count = 0;

    // Iterate the loop
    while (input != 5) {

        printf("\n\n********######"
               "WELCOME TO E-LIBRARY "
               "#####********\n");
        printf("\n\n1. Add book infor"
               "mation\n2. Display "
               "book information\n");
        printf("3. List all books of "
               "given author\n");
        printf(
            "4. List the count of book"
            "s in the library\n");
        printf("5. Exit");

        // Enter the book details
        printf("\n\nEnter one of "
               "the above: ");
        scanf("%d", &input);

        // Process the input
        switch (input) {

        // Add book
        case 1:

            printf("Enter book name = ");
            scanf("%s", lib[i].book_name);

            printf("Enter author name = ");
            scanf("%s", lib[i].author);

            printf("Enter pages = ");
            scanf("%d", &lib[i].pages);

            printf("Enter price = ");
            scanf("%f", &lib[i].price);
            count++;

            break;

        // Print book information
        case 2:
            printf("you have entered"
                   " the following "
                   "information\n");
            for (i = 0; i < count; i++) {

                printf("book name = %s",
                       lib[i].book_name);

                printf("\t author name = %s",
                       lib[i].author);

                printf("\t  pages = %d",
                       lib[i].pages);

                printf("\t  price = %f",
                       lib[i].price);
            }
            break;

        // Take the author name as input
        case 3:
            printf("Enter author name : ");
            scanf("%s", ar_nm);
            for (i = 0; i < count; i++) {

                if (strcmp(ar_nm,
                           lib[i].author)
                    == 0)
                    printf("%s %s %d %f",
                           lib[i].book_name,
                           lib[i].author,
                           lib[i].pages,
                           lib[i].price);
            }
            break;

        // Print total count
        case 4:
            printf("\n No of books in "
                   "brary : %d",
                   count);
            break;
        case 5:
            exit(0);
        }
    }
    return 0;
}

Java

import java.util.Scanner;

// Create a class for the Library
class Library {
    String bookName;
    String author;
    int pages;
    float price;
}

// Main class for the driver code
public class ELibrary {

    public static void main(String[] args) {
        // Create an array of Library objects
        Library[] library = new Library[100];

        String arNm;

        // Keep track of the number of books available in the library
        int i, input, count;

        i = input = count = 0;

        // Initialize the array with Library objects
        for (int j = 0; j < library.length; j++) {
            library[j] = new Library();
        }

        // Scanner to take input from the user
        Scanner scanner = new Scanner(System.in);

        // Iterate the loop
        while (input != 5) {
            System.out.println("\n\n********###### WELCOME TO E-LIBRARY #####********");
            System.out.println("1. Add book information\n2. Display book information");
            System.out.println("3. List all books of given author\n4. List the count of books in the library");
            System.out.println("5. Exit");

            // Enter the book details
            System.out.print("\n\nEnter one of the above: ");
            input = scanner.nextInt();

            // Process the input
            switch (input) {

                // Add book
                case 1:
                    System.out.print("Enter book name = ");
                    library[i].bookName = scanner.next();

                    System.out.print("Enter author name = ");
                    library[i].author = scanner.next();

                    System.out.print("Enter pages = ");
                    library[i].pages = scanner.nextInt();

                    System.out.print("Enter price = ");
                    library[i].price = scanner.nextFloat();
                    count++;
                    i++;
                    break;

                // Print book information
                case 2:
                    System.out.println("You have entered the following information");
                    for (int j = 0; j < count; j++) {
                        System.out.println("Book name = " + library[j].bookName +
                                "\t Author name = " + library[j].author +
                                "\t Pages = " + library[j].pages +
                                "\t Price = " + library[j].price);
                    }
                    break;

                // Take the author name as input
                case 3:
                    System.out.print("Enter author name: ");
                    arNm = scanner.next();
                    for (int j = 0; j < count; j++) {
                        if (arNm.equals(library[j].author)) {
                            System.out.println(library[j].bookName + " " +
                                    library[j].author + " " +
                                    library[j].pages + " " +
                                    library[j].price);
                        }
                    }
                    break;

                // Print total count
                case 4:
                    System.out.println("\nNo of books in library: " + count);
                    break;
                case 5:
                    System.exit(0);
            }
        }
    }
}

Python3

# Python code equivalent of the C++ code

class Library:
    def __init__(self, book_name, author, pages, price):
        self.book_name = book_name
        self.author = author
        self.pages = pages
        self.price = price

    def __str__(self):
        return f"{self.book_name}\t {self.author}\t {self.pages}\t {self.price}"


# Driver Code
if __name__ == "__main__":
    # Create an array of Library objects
    lib = []

    # Keep the track of the number of
    # of books available in the library
    count = 0

    # Iterate the loop
    while True:
        print("\n\n********######WELCOME TO E-LIBRARY #####********\n")
        print("1. Add book information\n2. Display book information\n", 
            "3. List all books of given author\n4. List the count of books in the library\n5. Exit\n")

        # Enter the book details
        input_choice = input("Enter one of the above: ")

        # Process the input
        if input_choice == '1':
            book_name = input("Enter book name = ")
            author = input("Enter author name = ")
            pages = int(input("Enter pages = "))
            price = float(input("Enter price = "))
            lib.append(Library(book_name, author, pages, price))
            count += 1
        elif input_choice == '2':
            print("you have entered the following information")
            for book in lib:
                print(book)
        elif input_choice == '3':
            ar_nm = input("Enter author name : ")
            for book in lib:
                if book.author == ar_nm:
                    print(book)
        elif input_choice == '4':
            print(f"\nNo of books in library : {count}\n")
        elif input_choice == '5':
            exit(0)

using System;

// Create Structure of Library
struct Library
{
    public string BookName;
    public string Author;
    public int Pages;
    public float Price;
}

// Driver Code
class Program
{
    static void Main()
    {
        // Create an array of structs
        Library[] library = new Library[100];

        string authorName;

        // Keep track of the number of books available in the library
        int i, input, count;

        i = input = count = 0;

        // Iterate the loop
        while (input != 5)
        {
            Console.WriteLine("\n\n********######" +
                              "WELCOME TO E-LIBRARY " +
                              "#####********\n");
            Console.WriteLine("\n\n1. Add book information\n2. Display book information\n" +
                              "3. List all books of given author\n" +
                              "4. List the count of books in the library\n" +
                              "5. Exit\n");

            // Enter the book details
            Console.Write("\n\nEnter one of the above: ");
            input = int.Parse(Console.ReadLine());

            // Process the input
            switch (input)
            {
                // Add book
                case 1:
                    Console.Write("Enter book name = ");
                    library[i].BookName = Console.ReadLine();

                    Console.Write("Enter author name = ");
                    library[i].Author = Console.ReadLine();

                    Console.Write("Enter pages = ");
                    library[i].Pages = int.Parse(Console.ReadLine());

                    Console.Write("Enter price = ");
                    library[i].Price = float.Parse(Console.ReadLine());
                    count++;

                    break;

                // Print book information
                case 2:
                    Console.WriteLine("You have entered the following information");
                    for (i = 0; i < count; i++)
                    {
                        Console.WriteLine($"Book name = {library[i].BookName}" +
                                          $"\t Author name = {library[i].Author}" +
                                          $"\t Pages = {library[i].Pages}" +
                                          $"\t Price = {library[i].Price}");
                    }
                    break;

                // Take the author name as input
                case 3:
                    Console.Write("Enter author name : ");
                    authorName = Console.ReadLine();
                    for (i = 0; i < count; i++)
                    {
                        if (authorName == library[i].Author)
                            Console.WriteLine($"{library[i].BookName} {library[i].Author} {library[i].Pages} {library[i].Price}");
                    }
                    break;

                // Print total count
                case 4:
                    Console.WriteLine($"\nNo of books in library: {count}\n");
                    break;

                case 5:
                    Environment.Exit(0);
                    break;
            }
        }
    }
}

JavaScript

const readline = require('readline');

// Create a class for the Library
class Library {
    constructor() {
        this.bookName = "";
        this.author = "";
        this.pages = 0;
        this.price = 0.0;
    }
}

// Main function for the driver code
function main() {
    // Create an array of Library objects
    let library = new Array(100).fill(null).map(() => new Library());

    let arNm;

    // Keep track of the number of books available in the library
    let i = 0, input = 0, count = 0;

    // Initialize the array with Library objects

    // Iterate the loop
    const rl = readline.createInterface({
        input: process.stdin,
        output: process.stdout
    });

    rl.setPrompt("\n\nEnter one of the above: ");

    rl.prompt();

    // Enter the book details
    rl.on('line', (line) => {
        input = parseInt(line.trim());

        // Process the input
        switch (input) {

            // Add book
            case 1:
                rl.question("Enter book name = ", (bookName) => {
                    library[i].bookName = bookName;
                    rl.question("Enter author name = ", (author) => {
                        library[i].author = author;
                        rl.question("Enter pages = ", (pages) => {
                            library[i].pages = parseInt(pages);
                            rl.question("Enter price = ", (price) => {
                                library[i].price = parseFloat(price);
                                count++;
                                i++;
                                rl.prompt();
                            });
                        });
                    });
                });
                break;

            // Print book information
            case 2:
                console.log("You have entered the following information");
                for (let j = 0; j < count; j++) {
                    console.log("Book name = " + library[j].bookName +
                        "\t Author name = " + library[j].author +
                        "\t Pages = " + library[j].pages +
                        "\t Price = " + library[j].price);
                }
                rl.prompt();
                break;

            // Take the author name as input
            case 3:
                rl.question("Enter author name: ", (author) => {
                    arNm = author;
                    for (let j = 0; j < count; j++) {
                        if (arNm === library[j].author) {
                            console.log(library[j].bookName + " " +
                                library[j].author + " " +
                                library[j].pages + " " +
                                library[j].price);
                        }
                    }
                    rl.prompt();
                });
                break;

            // Print total count
            case 4:
                console.log("\nNo of books in library: " + count);
                rl.prompt();
                break;
            case 5:
                rl.close();
                break;
            default:
                rl.prompt();
        }
    }).on('close', () => {
        process.exit(0);
    });
}

// Call the main function to start the program
main();