Base Copy constructor not called

Question

class Base
{
      public:
      int i;

      Base()
      {
          cout<<\"Base Constructor\"<

        

Answer 1

If you want to read actual rule you should refer to C++ Standard 12.8/8:

The implicitly-defined copy constructor for class X performs a memberwise copy of its subobjects. The order of copying is the same as the order of initialization of bases and members in a user-defined construc- tor (see 12.6.2). Each subobject is copied in the manner appropriate to its type:

• if the subobject is of class type, the copy constructor for the class is used;
• if the subobject is an array, each element is copied, in the manner appropriate to the element type;
• if the subobject is of scalar type, the built-in assignment operator is used.

When you define copy constructor explicitly you should call copy c-tor of base class explicitly.