private List<Call> callHistory=new List<Call>(); //Task 9 - write proparty Call history to store List of Calls
public GSM(string manufacturer, string model) //Task 2 - define constructors
{
this.Manufacturer = manufacturer;
this.Model = model;
this.battery = null;
this.owner = null;
this.display = null;
}
public GSM(string manufacturer, string model, int price, string owner, Battery battery, Display display) //Task 2 - define constructors
{
this.Manufacturer = manufacturer;
this.Model = model;
this.Price = price;
this.Owner = owner;
this.battery = battery;
this.display = display;
}