using System;

class Person

{

    public string Name { get; set;}

    public int Alter { get; set;}

    public Person (string name , int alter)

    {

        Name=name;

        Alter=alter;

    }

    class Program

    {

        static void Main( string[] args)

        {

            Person person = new Person

            ("Unbekannt " ,30);

            Console.ReadLine();

​

        }

    }

}