11.7 MultipleInheritance_Platypus.cpp

#include <iostream>
using namespace std;

class Animal
{
public:
   Animal()
   {
      cout << "Animal constructor" << endl;
   }

   int age;
};

class Mammal:public Animal {};
class Bird:public Animal {};
class Reptile:public Animal {};

class Platypus :public Mammal, public Bird, public Reptile
{
public:
   Platypus()
   {
      cout << "Platypus constructor" << endl;
   }
};

int main()
{
   Platypus duckBilledP;

   // uncomment next line of code to see compile failure because
   // age is ambiguous: three instances of base Animal per Platypus
   // duckBilledP.age = 25;

   return 0;
}