Library Management System Using C++ With Source Code
Introduction :
The Library Management System is developed in C++ and offers a command-line interface. The system handles student accounts and book management, including adding, editing, viewing books, and managing student transactions.
This Library Management System allows administrators to manage books and student accounts, while students can manage their balances and issue books. The system includes functionalities for creating student accounts, depositing funds, issuing books, and viewing or editing book details.
Required Modules or Packages :
Ensure you have a C++ compiler such as GCC or Clang to compile and run this application. No external libraries or packages are required.
How to Run the Code :
To compile and run the Library Management System, follow these steps:
- Save the Code: Copy the provided C++ code into a file named library_management_system.cpp.
- Compile the Code: Use a C++ compiler to compile the For example, using g++:
g++ -o library_management_system library_management_system.cpp
3. Run the Program: Execute the compiled program:
./library_management_system
Code Explanation :
Initialization of Books:
for (int i = 0; i < MAX_BOOKS; i++) { strcpy(book_title[i], "Title"); strcpy(book_author[i], "Author"); book_isbn[i] = i + 1000; book_available[i] = true;
}
book_count = MAX_BOOKS;
- Initializes the library with 15 books (default titles and authors) and sets their availability to true.
Login and Menu Selection:
while (true) {
cout <> option;
// ... additional code
}
- Presents login options for Admin, Student, or Exit. Continues in a loop until Exit is
Password Verification:
if (password == "password") {
// Admin or student options based on role
} else {
cout << "Incorrect password.\n";
}
- Verifies the entered password. If correct, proceeds to role-specific options; otherwise, displays an error message.
Admin Actions:
if (is_admin) {
// Admin-specific options
}
- Shows admin options (Add book, Edit book, View book status, etc.) and executes the selected action.
Student Actions:
else {
int roll;
cout <> roll;
// ... additional student actions
}
- Allows students to view balance, deposit money, or issue a book based on their roll
Create Account if Not Found:
if (index == -1) {
cout <> option;
if (option == 1) { create_account();
}
}
- If the student is not found, prompts to create a new account if the user chooses
Incorrect Password Handling:
else {
cout << "Incorrect password.\n";
}
Source Code :
main.cpp
#include
#include
#include
using namespace std;
// Constants
const int MAX_STUDENTS = 20;
const int MAX_BOOKS = 15;
const int MAX_NAME_LENGTH = 50;
// Global variables
int student_count = 0;
int book_count = 0;
double student_balance[MAX_STUDENTS];
int student_roll[MAX_STUDENTS];
char student_name[MAX_STUDENTS][MAX_NAME_LENGTH];
char book_title[MAX_BOOKS][MAX_NAME_LENGTH];
char book_author[MAX_BOOKS][MAX_NAME_LENGTH];
int book_isbn[MAX_BOOKS];
bool book_available[MAX_BOOKS];
// Function prototypes
void create_account();
void display(int roll);
void deposit_amount(int roll, double amount);
void issue_item(int roll);
void display_sorted();
int find_student(int roll);
int find_book(int isbn);
void add_book();
void edit_book();
void view_books();
int main() {
// Initialization
// Add initial 15 books to the library
// TODO: Replace with actual book data
for (int i = 0; i < MAX_BOOKS; i++) {
strcpy(book_title[i], "Title");
strcpy(book_author[i], "Author");
book_isbn[i] = i + 1000;
book_available[i] = true;
}
book_count = MAX_BOOKS;
int option;
bool is_admin;
string password;
while (true) {
cout <> option;
if (option == 0) {
break;
}
is_admin = (option == 1);
cout <> password;
if (password == "password") { // Use a simple password for demonstration purposes.
if (is_admin) {
cout <> option;
switch (option) {
case 1: {
add_book();
break;
}
case 2: {
edit_book();
break;
}
case 3: {
view_books();
break;
}
case 4: {
display_sorted();
break;
}
case 5: {
int roll;
cout <> roll;
display(roll);
break;
}
}
} else {
int roll;
cout <> roll;
int index = find_student(roll);
if (index == -1) {
cout <> option;
if (option == 1) {
create_account();
}
} else {
cout <> option;
switch (option) {
case 1: {
display(roll);
break;
}
case 2: {
double amount;
cout <> amount;
deposit_amount(roll, amount);
break;
}
case 3: {
issue_item(roll);
break;
}
}
}
}
} else {
cout <= MAX_STUDENTS) {
cout << "Student limit reached. Cannot create more accounts.\n";
return;
}
int roll;
cout <> roll;
if (find_student(roll) != -1) {
cout << "Account already exists for this roll number.\n";
return;
}
student_roll[student_count] = roll;
cout << "Enter student name: ";
cin.ignore();
cin.getline(student_name[student_count], MAX_NAME_LENGTH);
double initial_deposit;
cout <> initial_deposit;
if (initial_deposit < 50) {
cout << "Initial deposit must be at least $50.\n";
return;
}
student_balance[student_count] = initial_deposit - 20 - 30; // Account opening and security deposit
student_count++;
}
void display(int roll) {
int index = find_student(roll);
if (index == -1) {
cout << "Student not found.\n";
return;
}
cout << "Roll No: " << student_roll[index] << endl;
cout << "Name: " << student_name[index] << endl;
cout << "Balance: $" << fixed << setprecision(2) << student_balance[index] << endl;
}
void deposit_amount(int roll, double amount) {
int index = find_student(roll);
if (index == -1) {
cout << "Student not found.\n";
return;
}
student_balance[index] += amount;
cout << "New balance: $" << fixed << setprecision(2) << student_balance[index] << endl;
}
void issue_item(int roll) {
int index = find_student(roll);
if (index == -1) {
cout << "Student not found.\n";
return;
}
cout << "Available books:\n";
for (int i = 0; i < book_count; i++) {
if (book_available[i]) {
cout << i + 1 << ". " << book_title[i] << " by " << book_author[i] << " (ISBN: " << book_isbn[i] << ")\n";
}
}
int choice;
cout <> choice;
if (choice == 0) {
return;
}
if (book_available[choice - 1] && student_balance[index] >= 2) {
book_available[choice - 1] = false;
student_balance[index] -= 2;
cout << "Book issued successfully. New balance: $" << fixed << setprecision(2) << student_balance[index] << endl;
} else {
cout << "Cannot issue the book. Insufficient balance or book is unavailable.\n";
}
}
void display_sorted() {
for (int i = 0; i < student_count; i++) {
for (int j = i + 1; j student_roll[j]) {
swap(student_roll[i], student_roll[j]);
swap(student_balance[i], student_balance[j]);
swap(student_name[i], student_name[j]);
}
}
}
for (int i = 0; i < student_count; i++) {
cout << student_roll[i]<< " - " << student_name[i] << " - Balance: $" << fixed << setprecision(2) << student_balance[i] << endl;
}
}
int find_student(int roll) {
for (int i = 0; i < student_count; i++) {
if (student_roll[i] == roll) {
return i;
}
}
return -1;
}
int find_book(int isbn) {
for (int i = 0; i = MAX_BOOKS) {
cout << "Book limit reached. Cannot add more books.\n";
return;
}
cout << "Enter book title: ";
cin.ignore();
cin.getline(book_title[book_count], MAX_NAME_LENGTH);
cout << "Enter book author: ";
cin.getline(book_author[book_count], MAX_NAME_LENGTH);
int isbn;
cout <> isbn;
if (find_book(isbn) != -1) {
cout << "A book with this ISBN already exists.\n";
return;
}
book_isbn[book_count] = isbn;
book_available[book_count] = true;
book_count++;
}
void edit_book() {
int isbn;
cout <> isbn;
int index = find_book(isbn);
if (index == -1) {
cout << "Book not found.\n";
return;
}
cout << "Current book title: " << book_title[index] << endl;
cout << "Enter new book title: ";
cin.ignore();
cin.getline(book_title[index], MAX_NAME_LENGTH);
cout << "Current book author: " << book_author[index] << endl;
cout << "Enter new book author: ";
cin.getline(book_author[index], MAX_NAME_LENGTH);
cout << "Book details updated.\n";
}
void view_books() {
for (int i = 0; i < book_count; i++) {
cout << "Title: " << book_title[i] << endl;
cout << "Author: " << book_author[i] << endl;
cout << "ISBN: " << book_isbn[i] << endl;
cout << "Available: " << (book_available[i] ? "Yes" : "No") << endl << endl;
}
}
Output :
This screenshot shows the login and main menu options of the Library Management
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