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

void *fun(void *arg) {
  printf("Hi from fun\n");
  int *x = new int(100);
  return (void *)x;
}

int main() {
  pthread_t thr;
  int code = pthread_create(&thr, NULL, fun, NULL);
  printf("Hi from main\n");
  void *y;
  pthread_join(thr, &y);
  printf("y=%d\n", *(int *)y);
}