You have greatly misunderstood the purpose of srand. This is not a bug. If you repeatedly call srand with the same seed, then you will get the same sequence of pseudorandom numbers from rand each time. That's what srand does.
in reply to srand producing the same sequence of random numbers
If you want a different set of pseudorandom numbers each time, then forget that srand even exists. The first call to rand will automatically seed the PRNG with a value based on the system clock, which will get you close enough to actual randomness for most practical purposes.