title: iPhone: random() function gives me the same random number everytime
body: <p>I am using function random()%x for the generation of a random number, but every time I start the application I see that it creates or generates the same number. </p>
  
  <p>Like I am placing some images randomly based on that random number and I see all the images are placed at the same place no matter how many times I run the application.</p>