static void Main(string[] args)
{
DigimonArena arena = new DigimonArena("Fire Arena");
Digimon a = new Digimon("Fire");
Digimon b = new Digimon("Ice");
arena.Fight(a, b);
}
public void Fight(Digimon a, Digimon b)
{
this.FirstDigi = a;
this.SecondDigi = b;
System.Console.WriteLine("Digimon {0} is fighting Digimon {1} in arena: {2}.", this.FirstDigi.name, this.SecondDigi.name, arenaName);
}