public Product(string name, double quantity, double unitPrice, ProductType type)
{
this.name = name;
this.id = IDGENERATOR.generator();
this.quantity = quantity;
this.unitPrice = unitPrice;
this.type = type;
}
static void Main(string[] args)
{
ProductType ob1 = new ProductType();
ob1.typeDescription = "This is soap";
ob1.typeName = "Universal";
Product ob2 = new Product("Lux", 10.0, 38.0, ob1);
Console.WriteLine("After Buying:\n\n");
ob2.buy(5);
ob2.print_Product();
Console.WriteLine("After Selling : \n\n");
ob2.sell(5);
ob2.print_Product();
}