Virtual Inheritance

#include <iostream>

class Animal {
public:
    virtual void speak();
    virtual ~Animal() = default;
private:
    double animalData;
}

class Lion : public Animal {
public:
    Lion() {
        std::cout << "Lion Consturctor" << std::endl;
    }

    virtual void speak() {
        std::cout << "Lion!" << std::endl;
    }

    virtual ~Lion() {
        std::cout << "Lion Desturctor" << std::endl;
    }

private: 
    double lionData;
};


class Tiger : public Animal {
public:
    Tiger() {
        std::cout << "Tiger Consturctor" << std::endl;
    }

    virtual void speak() {
        std::cout << "Tiger!" << std::endl;
    }

    virtual ~Tiger() {
        std::cout << "Tiger Desturctor" << std::endl;
    }

private:
    double tigerData;
};


class Liger : public Tiger, public Lion {
public:
    Liger() {
        std::cout << "Liger Consturctor" << std::endl;
    }

    virtual void speak() override {
        std::cout << "Liger!" << std::endl;
    }

    virtual ~Liger() {
        std::cout << "Liger Desturctor" << std::endl;
    }

private:
    double ligerData;
};


int main() {
    Liger liger;
    liger.speak();
    return 0;
}