I'm trying to do the screens for the user input and I would like to ask this.
-> I want the user to answer a question where the answers are just the numbers (1), (2) or (3). How can I make this so that the user can´t answer with letters or any other caracters but just 1,2 or 3. And when the user gives just an "enter" the cursor passes to the next line, but I want it to stay in the same position.
How can I control this?