static void Main()
 {
     Battery liIon = new Battery(24);
     Laptop asus = new Laptop("X", "Asus", "Intel", "AMD", 15.6M, liIon, 1450.99M);
     Console.WriteLine(asus);
     Console.WriteLine(asus.Battery.BatteryLife);
 }
 public Laptop(string model, string manufacture, string cpu, string gpu, decimal screenSize, Battery battery, decimal price)
     : this(model, manufacture, cpu, gpu, screenSize)
 {
     this.battery = battery;
     this.price = price;
 }