static void Main(string[] args)
{
computer comp1 = new computer("Dell", "Usa");
laptop lap1 = new laptop("Dell", "Usa", "Inspirion", "Red");
desktop desk1 = new desktop("Dell", "USA", "FOLL", "Blue");
Console.WriteLine(comp1.ToString());
Console.WriteLine(lap1.ToString());
Console.WriteLine(desk1.ToString());
Console.ReadLine();
}
static void Main(string[] args)
{
computer comp1 = new computer("Dell", "Usa");
Laptop lap1 = new Laptop("Dell", "USA", "Inspiron", "Blue");
Desktop desk1 = new Desktop("Dell", "USA", "XPS", "Red");
Console.WriteLine(comp1.Format());
Console.WriteLine(lap1.FormatLaptop());
Console.WriteLine(desk1.FormatDesk());
Console.ReadLine();
}