Open another view when button is pressed in iOS

Question

I am completely new to iOS development and I want to load another view when a button is pressed in a present view.

I have created a view based application and follow

Answer 1

UIViewController* flipViewController = [[UIViewController alloc] initWithNibName:@"flip.xib" bundle:[NSBundle mainBundle]];
[self.view addSubview:flipViewController.view];

EDIT:

UIViewController* flipViewController = [[UIViewController alloc] initWithNibName:@"flip" bundle:[NSBundle mainBundle]];
[self.view addSubview:flipViewController.view];

Now click on flip.xib, click on the File's Owner on the left hand side of the design area, and change the class to UIViewController. Now CTRL drag from File's Owner icon to the View icon right below it and select the IBOutlet View.