Will an 'empty' constructor or destructor do the same thing as the generated one?

Question

Suppose we have a (toy) C++ class such as the following:

class Foo {
    public:
        Foo();
    private:
        int t;
};

Since no des

Answer 1

I agree with David except that I would say it is generally a good practice to define a virtual destructor i.e.

virtual ~Foo() { }

missing out virtual destructor can lead to memory leak because people who inherit from your Foo class may not have noticed that their destructor will never be called!!