define

[zaidnaser]

What is the output of the following C++ program? Explain why you
can get such output by considering the order of constructor and destructor calls. [Note that if only the output is provided in your solution, you would loss all the points of this question.]

# include < iostream >
using namespace std ;
# define CLASS ( ID ) class ID {\
public : \
ID ( int ){ cout < <# ID < <" constructor \n"; }\
~ ID () { cout < <# ID < <" destructor \n"; } };
CLASS ( Base1 );
CLASS ( Member1 );
CLASS ( Member2 );
CLASS ( Member3 );
CLASS ( Member4 );
class Derived1 : public Base1 {
Member1 m1 ;
Member2 m2 ;
public :
Derived1 ( int ) : m2 (1) , m1 (2) , Base1 (3) {
cout << " Derived1 constructor \n";
}
~ Derived1 () {
cout << " Derived1 destructor \n";
}
};
class Derived2 : public Derived1 {
Member3 m3 ;
Member4 m4 ;
public :
Derived2 () : m3 (1) , Derived1 (2) , m4 (3) {
cout << " Derived2 constructor \n";
}
~ Derived2 () {
cout << " Derived2 destructor \n";
}
};
int main () {
Derived2 d2 ;
}

[Zhuge]

The question seems clear to me. What trouble are you having?

[zaidnaser]

Someone please just explain to me the order.