// Create Threads (interleaved reader/writer/reader/wr... etc.)
        int rC = 0;                     // reader thread count
        int wC = 0;                     // writer thread count

        while ((rC + wC) < (readers + writers))
        {
                if ((rC + wC) % 2 == C_CREATE_READ)
                {
                        pthread_create(&threads[rC], NULL, trreader, NULL);
                        rC++;
                }
                else if((rC + wC) % 2 == C_CREATE_WRITE)
                {
                        int pos = readers + wC;
                        pthread_create(&threads[pos], NULL, trwriter, NULL);
                        wC++;
                }
        }