/*
 * Reader
 */
int cur_id;
int cur_num;

sem wait_for_writer;
sem wait_for_reader;

void reader(const int id)
{
    while (1)
    {
        P(wait_for_reader);

        // Wait for writer to write and release again (we don't actually need it i guess)
        P(wait_for_writer);
        V(wait_for_writer);

        // Do stuff
        if (id == cur_id)
        {
            printf( "%d", cur_num );
        }

        // Release reader lock so the writer knows we're done
        V(wait_for_reader);
    }
}


/*
 * Writer
 */

void writer( )
{
    while (1)
    {
        P(wait_for_writer);
        cur_id = get_rand_id( );
        cur_num = get_rand_num( );

        V(wait_for_writer);
        P(wait_for_reader);
        V(wait_for_reader);
    }
}