Deadlock

deadlock.cpp

#include <iostream>
#include <thread>
#include <mutex>
#include <chrono>


std::mutex book1;
std::mutex book2;

void studentA() {
    std::cout << "Student A tries to reserve Book 1\n";
    std::lock_guard<std::mutex> lock1(book1);
    std::this_thread::sleep_for(std::chrono::milliseconds(100)); // simulate delay

    std::cout << "Student A tries to reserve Book 2\n";
    std::lock_guard<std::mutex> lock2(book2);
    std::cout << "Student A reserved both books\n";
}

void studentB() {
	
  std::cout << "Student B tries to reserve Book 2\n";
  std::lock_guard<std::mutex> lock2(book2);
  std::this_thread::sleep_for(std::chrono::milliseconds(100)); // simulate delay

  std::cout << "Student B tries to reserve Book 1\n";
  std::lock_guard<std::mutex> lock1(book1); 
  std::cout << "Student B reserved both books\n";

}

int main() {
    std::cout << "Demonstrating deadlock scenario:\n";
    std::thread t1(studentA);
    std::thread t2(studentB);
    t1.join();
    t2.join();


    return 0;
}