#include <pthread.h>
#include <stdio.h>

void *thread_func(void *arg) {
  pthread_t thread_id = pthread_self();
  printf("Inside thread_func, thread ID = %ld\n", thread_id);

  // Return the thread ID as the thread's return value
  return (void *)thread_id;
}

int main() {
  pthread_t thread1, thread2;
  int thread1_arg = 10, thread2_arg = 20;

  // Create two threads
  pthread_create(&thread1, NULL, thread_func, &thread1_arg);
  pthread_create(&thread2, NULL, thread_func, &thread2_arg);

  void *thread1_result, *thread2_result;

  // Wait for the threads to finish
  pthread_join(thread1, &thread1_result);
  pthread_join(thread2, &thread2_result);

  // Compare the thread IDs
  if (pthread_equal(thread1, thread2)) {
    printf("Thread IDs are equal\n");
  } else {
    printf("Thread IDs are not equal\n");
  }

  // Print the thread IDs and return values
  printf("Thread 1 ID = %ld, return value = %ld\n", thread1,
         (long)thread1_result);
  printf("Thread 2 ID = %ld, return value = %ld\n", thread2,
         (long)thread2_result);

  return 0;
}