In general OOP diamond problem solution writing in C++.

diamond_problem.cpp

// Written by Javed Ahmed - F2019266402
#include <iostream>
using namespace std;


class Animal {
public:
     void eat() {
        cout << "Animal is eating.\n";
    }

};

class Mamal: public virtual Animal {
public:
    void breath() {
        cout << "Mamal is breath. \n";
    }
};

class WingedAnimal : public virtual Animal {
public:
    void fly() {
        cout << "Winged Animal can fly.";
    }
};

class Bat : public Mamal, public WingedAnimal {

};

int main()
{

	Bat b;
	b.eat();

	return 0;
}