using System;

public abstract class SuperClass
{
    protected int zahl;
 
    public void berechne()
    {
        // mach was
    }
}
 
public class SubClass : SuperClass
{
    private string name;
 
    public SubClass() {}
 
}

public class Test
{
	public static void Main()
	{
		SubClass c = new SubClass();
 
		c.berechne();
	}
}