Because I am a beginner who has recently started learning programming for application development, I can't tell you with basic questions.

What I want to do is
(1) Ask the textfield to put a number and make the textfield for that number appear on the same page.
(2) Have the characters entered in the textfield that appears.
(3) Generate one ControllerView for each input and reflect the characters.
* The textfield that appears in ① does not set an upper limit, so we want to display it with a scrollview.

The only thing I can do right now is to display the value entered in the fixed textfield on the next screen or on the next screen.
When I was investigating, I wrote that I should use addsubview etc., but I do not understand well. Thanks for your understanding.