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

int main ( );
void *print_message_function ( void *ptr );

int main ( )
{
  int iret1;
  int iret2;
  char *message1 = "Thread 1";
  char *message2 = "Thread 2";
  pthread_t thread1;
  pthread_t thread2;
/* 
  Create independent threads each of which will execute function.
*/

     iret1 = pthread_create( &thread1, NULL, print_message_function, (void*) message1);
     iret2 = pthread_create( &thread2, NULL, print_message_function, (void*) message2);

     /* Wait till threads are complete before main continues. Unless we  */
     /* wait we run the risk of executing an exit which will terminate   */
     /* the process and all threads before the threads have completed.   */

     pthread_join( thread1, NULL);
     pthread_join( thread2, NULL); 

     printf("Thread 1 returns: %d\n",iret1);
     printf("Thread 2 returns: %d\n",iret2);

  return 0;
}

void *print_message_function ( void *ptr )
{
  char *message;
  message = (char *) ptr;
  printf("%s \n", message);

  return 0;
}