gistfile1.m

            //rootViewController.h
            //showLoginScreen function

            PupilsViewControllerV2Pupils *pupil_selection = [[PupilsViewControllerV2Pupils alloc] init];
            [pupil_selection setDelegate:self]; //makes the rootviewcontroller (self) listen for response from PupilsViewControllerV2Pupils 
            
            ... //setup your UIViewController (PupilsViewControllerV2Pupils) here
            
            //create UINavigationController to hold the loginView

            UINavigationController *selection_controller = [[UINavigationController alloc] initWithRootViewController:pupil_selection];

            //only want to call this if its an iPad... if its iPhone we let it use the standard appearance what takes the whole screen
            if ([[UIDevice currentDevice] userInterfaceIdiom] == UIUserInterfaceIdiomPad) {
                        [selection_controller setModalPresentationStyle:UIModalPresentationFormSheet];
                        [selection_controller setModalTransitionStyle:UIModalTransitionStyleFlipHorizontal];
            }

            //present the view
            [self presentModalViewController:selection_controller animated:YES];