static void Main(string[] args)
{
Mage mage;
mage.hp = 100;
mage.attack = 50;
Mage mage2 = mage;
mage2.hp = 0;
knight knight = new knight();
knight.hp = 100;
knight.attack = 10;
knight knight2 = knight.Clone();
knight2.hp = 0;
}
static void KillMage(Mage mage)
{
mage.hp = 0;
}