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

pthread_mutex_t mymutex;

void *body(void *arg) 
{
	int i,j;
	pthread_mutex_lock(&mymutex);
	for (j=0; j<40; j++) {	

		for (i=0; i<1000000; i++);
		printf("%c",*(char *)arg);

	}
	pthread_mutex_unlock(&mymutex);
	return NULL;
}

int main()
{
	pthread_t t1,t2,t3;  int err;  
 	pthread_mutexattr_t mymutexattr;
	pthread_attr_t myattr;  
	
	pthread_mutexattr_init(&mymutexattr);
	pthread_mutex_init(&mymutex, &mymutexattr);
	pthread_mutexattr_destroy(&mymutexattr);

	pthread_attr_init(&myattr);
	err = pthread_create(&t1, &myattr, body, (void *)".");
	err = pthread_create(&t2, &myattr, body, (void *)"#");
	err = pthread_create(&t3, &myattr, body, (void *)"o");
	
	pthread_attr_destroy(&myattr); 
	pthread_join(t1, NULL); pthread_join(t2, NULL); pthread_join(t3, NULL);

	printf("\n");
	return 0;
}