#include <iostream>

class A
{
public:
    A() { std::cout << "A "; }
    ~A() { std::cout << "~A "; }
};

class B
{
public:
    B() { std::cout << "B "; }
    ~B() { std::cout << "~B "; }
};

class C: public A
{
    B m_b;
public:
    C() { std::cout << "C "; }
    ~C() { std::cout << "~C "; }
};

int main()
{
    C c;
    return 0;
}