static void Main(string[] args)
 {
     TV tv = new TV("LG","DC");
     tv.SoundSystem="Dolby";
     tv.Log();
     tv.Log(true);
 }
 static void Main(string[] args)
 {
     TV tv = new TV("LG","DC");
     tv.SetSoundSystem("Dolby");
     tv.Log();
 }