#include <iostream>
#include <string>

using namespace std;

struct Animal{
  string name;
  Animal(const string& _name):name(_name){};
  virtual ~Animal()= default;
  virtual void eat(){cout << name << " eating" << endl;}
};

  struct Mammal: virtual Animal
{
  Mammal(const string & _name):Animal(_name){}
  virtual void breath() { cout << name <<  " breathing" << endl; }
};

struct Winged: virtual Animal
{
  Winged(const string& _name):Animal(_name){}
  virtual void flap() { cout << name << " flapping " << endl; }
};

struct Bat:   Mammal, Winged
{
  Bat(const string& name):Animal(name),Mammal(""),Winged(""){}
};


int main()
{
  Bat bat("bat"); 

  bat.eat();
  bat.breath();
  bat.flap();

}