#include <iostream>
using namespace std;

class A {
    protected: int a;
    public:
        A();
        ~A();
};
A::A() : a(0) { cout << "in A()" << endl; }
A::~A() { cout << "in ~A()" << endl; }

class B {
    protected: int b;
    public:
        B();
        ~B();
};
B::B() : b(1) { cout << "in B()" << endl; }
B::~B() { cout << "in ~B()" << endl; }

class C {
    protected: int c;
    public:
        C();
        ~C();
};
C::C() : c(2) { cout << "in C()" << endl; }
C::~C() { cout << "in ~C()" << endl; }

// *****************************************

// X inherits from A, B, and C;
// the order they appear below indicates
//      the order the constructors are called

//class X : public C, public B, public A
class X : public A, public C, public B {
    protected: int x;
    public:
        X();
        ~X();
};
X::X() : x(3) {
    cout << "in X()" << endl;
    cout << "a = " << a << endl;
    cout << "b = " << b << endl;
    cout << "c = " << c << endl;
    cout << "x = " << x << endl;
}
X::~X() { cout << "in ~X()" << endl; }

int main() {
    X x;
    return 0;
}