static void Main(string[] args)
{
GercekMusteri gercekmusteri = new GercekMusteri();
gercekmusteri.Adi = "Engin";
gercekmusteri.Soyadi = "Demiroğ";
gercekmusteri.Id = 1;
gercekmusteri.MüşteriNo = "1234";
gercekmusteri.TcNo = "4321";
TuzelMusteri tuzelmusteri = new TuzelMusteri();
tuzelmusteri.Id = 2;
tuzelmusteri.MüşteriNo = "5678";
tuzelmusteri.SirketAdi = "kodlama io";
tuzelmusteri.VergiNo = "98";
Musteri musteri1 = new Musteri();
Musteri musteri2 = new Musteri();
MusteriManager musterimanager = new MusteriManager();
musterimanager.ekle(gercekmusteri);
musterimanager.ekle(tuzelmusteri);
musterimanager.ekle(musteri1);
musterimanager.ekle(musteri2);
}