Copy constructor or = operator?

Question

    class Foo
    {


    };

    Foo f;
    Foo g = f; // (*)

My question is, what is being called in the line marked with (*) ? Is it the default

Answer 1

 Foo g = f; // (*)

copy constructor gets invoked .Its called copy initialization of object.

If you have not written copy constructor within class Foo then compiler generated copy constructor gets called.