I want to change below code with storyboard with Xcode 4.2.
UIViewController * example = [[ExampleViewController alloc] initWithNibName:@\"ExampleViewCon
If neither of the above are true, i.e. your view controller is on the storyboard but no segue connects to it, then you want UIStoryboard's instantiateViewControllerWithIdentifier:
method described in the documentation. You have to set the identifier in the storyboard for this to work.