#include <stdio.h>
#include <pthread.h>
#define NUM_THREADS 8

void *threadFunc(void *pArg) { 
  sleep(1);
  int* p = (int*)pArg;
  int myNum = *p;
  printf("Thread number %d\n", myNum);
}

main() {	
  int i; 
  pthread_t tid[NUM_THREADS];
 
  for (i = 0; i < NUM_THREADS; i++)
    pthread_create(&tid[i], NULL, threadFunc, &i);

  for (i = 0; i < NUM_THREADS; i++)
      pthread_join(tid[i], NULL); 
}