Random float number

Question

I wrote this function to get a pseudo random float between 0 .. 1 inclusive:

float randomFloat()
{
      float r = (float)rand()/(float)RAND_MAX;
      retur         


        

Answer 1

You need to call

srand(time(NULL));

before using rand for the first time. time is in .

EDIT: As Jonathan Leffler points out, this is easily predicted, so don't try using it for cryprography.