public GSM(string model, string manufacturer, decimal?price, string owner, Battery batteryInfo, Display displayInfo)
: this(model, manufacturer, batteryInfo, displayInfo) // Problem 2. Constructors
{
this.Price = price;
this.Owner = owner;
}
public GSM(string model, string manufacturer, Battery batteryInfo, Display displayInfo)
: this(model, manufacturer) // Problem 2. Constructors
{
this.BatteryInfo = batteryInfo;
this.DisplayInfo = displayInfo;
}