#include <iostream>
class Foo{
public:
    Foo() {
        std::cout << "Default constructor of Foo" << std::endl;
    }

    ~Foo() {
        std::cout << "Default destructor of Foo" << std::endl;
    }
};

class Base {
    int i;
    Foo f;
public:
    void sayHello() {
   	 std::cout << "Hello from Base" << std::endl;
    }
};