How do I scale down numbers from rand()?

Question

The following code outputs a random number each second:

int main ()
{
    srand(time(NULL)); // Seeds number generator with execution time.

    while (true)         


        

Answer 1

See man 3 rand -- you need to scale by dividing by RAND_MAX to obtain the range [0, 1] after which you can multiply by 100 for your target range.