https://www.youtube.com/watch?v=NvWTnIoQZj4
The C++ Programming Language (4th Edition) is a very good book, but understanding the concepts behind is not trivial and still is very difficult for me.
There is a short paper, Why C++ is not just an Object-Oriented Programming Language, in which he says that:
A language or technique is object-oriented if and only if it directly supports:
[1] Abstraction – providing some form of classes and objects.
[2] Inheritance – providing the ability to build new abstractions out of existing ones.
[3] Run-time polymorphism – providing some form of run-time binding.
class Usbsound_mono: public Usbsound {
public:
Usbsound_mono();
Usbsound_mono(char *s);
virtual ~Usbsound_mono();
};
class Usbsound_iq: public Usbsound {
public:
Usbsound_iq();
Usbsound_iq(char *s);
virtual ~Usbsound_iq();
};
Usbsound *mydevice[2]; /* I have two usb sound devices */
mydevice[0] = new Usbsound_mono{argv[1]}; /* this is IC-7410 */
mydevice[1] = new Usbsound_iq {argv[2]}; /* this is Soft66LC4 */
This is just a starting point, I need to add many more features, such as pure virtual functions, abstract base classes, etc.