소스 코드 Product.cs namespace 집합_관계 { public class Product { public string Name { get; private set; } public int Price { get; private set; } public string Company { get; private set; } readonly int pn; public int PN { get { return pn; } } static int lastpn; public Product(string name,int price,string company) { Name = name; Price = price; Company = company; lastpn++; pn = lastpn; } public override ..
