1. Determine the output of each of the following program when it is executed. (a) #include using namespace std; class abc { public: abc(); class x { public: x(); class y{ public: y(); }; }; }; abc::...

1. Determine the output of each of the following program when it is executed. (a)

#include using namespace std; class abc {

public:

abc(); class x {

public:

x();

class y{

public:

y();

};

};

};

abc:: abc()

{

cout <>

}

abc::x :: x()

{

cout <>

}

abc::x:: y:: y()

{

cout <>

}

int main()

{

}

(b)

abc obj; return 0;

#include using namespace std; class abc {

public:

abc(); class x {

public:

x();

};

};

abc:: abc()

{

cout <>

}

abc::x :: x()

{

cout <>

}

int main()

{

}

(c)

abc::x obj2; return 0;

#include using namespace std; union abc {

~abc(); union x {

~x(); union y {

~y(); union z {

~z();

};

};

};

};

abc:: ~abc()

{

cout <>

}

abc::x :: ~x()

{

cout <>

}

abc::x ::y :: ~y()

{

cout <>

}

abc::x ::y :: z :: ~z()

{

cout <>

}

int main()

{

abc obj1; abc::x obj2; abc::x::y obj3;

abc::x::y::z obj4; return 0;

}

(d)

#include using namespace std; union abc {

~abc(); struct x {

~x(); union y {

~y(); struct z {

~z();

};

};

};

};

abc:: ~abc()

{

cout <>

}

abc::x :: ~x()

{

cout <>

}

abc::x ::y :: ~y()

{

cout <>

}

abc::x ::y :: z :: ~z()

{

cout <>

}

int main()

{

abc obj1; abc::x obj2; abc::x::y obj3;

abc::x::y::z obj4; return 0;

}