Why doesn't the C++ default destructor destroy my objects?

Question

The C++ specification says the default destructor deletes all non-static members. Nevertheless, I can\'t manage to achieve that.

I have this:

class N         


        

Answer 1

class N {
public:
    ~N() {
        std::cout << "Destroying object of type N";
    }
};

class M {
public:
    M() {
        n = new N;
    }
//  ~M() { //this should happen by default
//      delete n;
//  }
private:
    N* n;
};

and now the expectation is :

M* m = new M();
delete m; //this should invoke the default destructor

It will only happen, if the class M is derived from N:

class M: Class N {
...

Only in this situation,

M* m = new M()

will call constructor of N and then constructor of M, where as

delete m;

will automatically call destructor of M first and then N