Original | TestDome

using System;

public class TextInput {}

public class NumericInput {}

public class UserInput
{
    public static void Main(string[] args)
    {
        //TextInput input = new NumericInput();
        //input.Add('1');
        //input.Add('a');
        //input.Add('0');
        //Console.WriteLine(input.GetValue());
    }
}