#include <stdio.h>
#include <pthread.h>
#include <sched.h>    /* Only necessary for sched_yield */
#include "string.h"
#include "iostream"

using namespace std;
void * print_message_function( void * VoidPtr )
{
//  char *message;
//  message = (char *) VoidPtr;
//  printf("%s", message);
//  fflush(stdout);    /* Make sure we see it right away */
    cout<<"print_message_function";

  /* If we wanted to return something, we would return a pointer
   * to the data that we wanted to return.
   *
   * Instead of simply using return, we could also call
   * pthread_exit.
   */
  return NULL;
}

int main()
{
  pthread_attr_t    pthread_attributes;

  //pthread_t progressThread;
    pthread_t thread1, thread2;
    char *message1 = "Hello";
    char *message2 = " World";
    cout<<"main print"<<endl;

  /* Populate attributes with defaults
   * If we wanted to customize this, we would probably
   * first set the defaults and then change as need.
   */
  pthread_attr_init(&pthread_attributes);

  /* Start threads to write out messages
   * Please note that we are not checking the return,
   * this is something that you should figure out how
   * to do on your own.
   */
  pthread_create( &thread1, &pthread_attributes,
          &print_message_function, (void *) message1);

  /* Provide N secs for completion (very bad idea to rely on this)
   * Use pthread_join instead, but you should learn to do this
   * on your own.
   */
  //sleep(5);

  /* Note that this time we don't pass the pthread_attributes
   * structure.  Instead we pass NULL which tells POSIX threads
   * to just use the defaults.
   */
  pthread_create(&thread2, NULL,
         &print_message_function, (void *) message2);

  /* Provide N secs for completion (very bad idea) */
  //sleep(5);

  //exit(0);
}