Random Functions

srand(time(NULL));
    int testRand1 = rand();
    printf("Random Number : %i\n" , testRand1);
    int testRand2 = rand() % 20;
    printf("Random Number 0-20 : %i\n" , testRand2);

    int generateRandom(int l, int u)
    {
        srand(time(NULL));

        int r = rand() % ((u-l) + 1);
        r = l + r;

        return r;
    }
    printf("Rand1a = %d\n" , generateRandom(0, 999));
    printf("Rand1b = %d\n" , generateRandom(0, 999));