generating random values in iPhone

Question

I have used rand(). But it gives a specific value even after I restart application.

I have implemented following in my application.

- (void)viewDidLo         


        

Answer 1

arc4random() is a built-in function that does not require seeding (and so therefore does not produce predictable sequences that can be generated by using a seed), and it conveniently returns integers. I never use anything else.