//#include <iostream>
#include "semaphore.h"
//#include <string>
//#include <fstream>

#define pthread_attr_default NULL
#define pthread_mutexattr_default NULL
#define pthread_condattr_default NULL

//using namespace std;

void* writer(void *ptr);


Semaphore writeWait;
Semaphore endWait;

int main ()
{
	pthread_t thread1, thread2;
	//semaphore_init (&writeWait,0);
	semaphore_init (&endWait,-1);
	char * hello = "hello";
	char * world = ", world!\n";
	pthread_create( &thread1, pthread_attr_default, (void *)&writer, (void *)hello);
	pthread_create( &thread2, pthread_attr_default, (void *)&writer, (void *)world);
	
	
	semaphore_down(&endWait);
	return 0;
}

void* writer(void *ptr)
{
	char * out;
	out = (char*)ptr;
	printf("%s",out);
	fflush(stdout);
	semaphore_up(&endWait);
}