Beginner needs a simple code

Hello, I m looking for a simple code that will display different text every time i clicked the button. Something like a jokes app. What i have right now is a switch statement which is fine but how do i make it NOT random? Example: - (IBAction)button:(id)sender { int text = arc4random() % 3; switch (text) { case 0: [login to view URL] = @"Hello world"; break; case 1: [login to view URL] =@"Is this the right way of doing it" ; break; case 2: [login to view URL] = @"looking for someone to help me out with this code"; break; default: break; } Also what would be the code do display previous text like having back button to return to previous text. Thanks