Threads SO 1 zad

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

    volatile  int licznik;

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

void *elo();

void *elo1()
{
        while(1)
        {
            licznik++;
        }
}

int main()
{
     pthread_t thread1, thread2;
     const char *message1 = "Thread 1";
     const char *message2 = "Thread 2";
     int  iret1, iret2;


    /* Create independent threads each of which will execute function */

     iret1 = pthread_create( &thread1, NULL, elo, (void*) message1);
     iret2 = pthread_create( &thread2, NULL, elo1, (void*) message2);

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

     exit(EXIT_SUCCESS);
}

void *elo()
{
    while(1)
    {
        printf("Elo  %d \n", licznik);
    }
}