Use srand() twice in a function?

[Jake.c]

Can I use the srand() function twice in a function like so?

void delaycalc(void)
{
    int one;
    int result;
    
    srand((unsigned)time(NULL));
    one = rand();
    
    srand(one);
    result = rand() % 1200;
    
    printf("%i", result);
}

You see I'm trying to get random numbers that are 1200 or less. However, when I use the time function to make a seed and loop the function so it displays 20 random numbers, it increments slowly like 2390, 2394, 2398 etc.

So it's hardly random. So can I use two srand() functions to try and randomise it more (Preferably so the values move down sometimes aswell)?