CPP inheritance tests

jettest.cpp

#include <iostream>
using namespace std;

class Tier {
	public:
	int id;
	virtual ~Tier() = default;
	Tier(int x) {
		id = x;
	}
};

class Ente: public Tier {
	public:
	virtual ~Ente() = default;
	Ente(int x) : Tier(x) {}
};

class Person: public Tier {
	public:
	virtual ~Person() = default;
	Person(int x) : Tier(x) {}
};

class Student: public Person {
	public:
	virtual ~Student() = default;
	Student(int x) : Person(x) {}
};

int main() {

	Tier* dagobertduck = new Ente(1);
	Tier* tutor = new Student(2);
	Person* p = new Student(3);

	Person alumni = *p;

	cout << alumni.id << endl;

	Person* tutorprivat = dynamic_cast<Person*>(tutor);

	cout << tutorprivat << endl;

	Person* dagobertmensch = dynamic_cast<Person*>(dagobertduck);

	cout << dagobertmensch << endl;

	//p = dynamic_cast<Tier*>(tutor);  <--  Funktioniert natürlich nicht weil inkompatible typen
	p = dynamic_cast<Person*>(tutor);

	cout << p << endl;

}