C++

15.2    Inheritance in C++

In C++, you represent inheritance as follows:

class Car {                    // Base or superclasspublic:    Windscreen windscreen_;    std::vector<Wheel> wheels_;    // …};class VwBus : public Car {     // VwBulli is a subclasspublic:    Flowers flowers_;    // …};  

So you write the name of the base class separated by a colon : and public after the name of the current class:

class Subclass : public Baseclass { …

Now you can happily create new VwBus instances. And each of them automatically has a windscreen_ and wheels_, even though you didn't explicitly mention it in the VwBus class:

Vwbus vw{};cout << vw.windscreen_;cout << vw.flowers_;  

If you create a pure Car car;, then car.windscreen_ will be a valid access, but in the class Car, car.flowers_ does ...