Copy constructor with pointers

Question

I have recently discovered that when I have pointers within a class, I need to specify a Copy constructor.

To learn that, I have made the following simple code. It c

Answer 1

if it has a pointer to a regular type then

A::A(const A& a):
  pointer_( new int( *a.pointer_ ) )
{
}

if it has a pointer to some base class then

A::A(const &a ):
  pointer_( a.pointer_->clone() )
{
}

Clone is a implementation of a prototype pattern

Don't forget to delete the pointer in the destructor

A::~A()
{
    delete pointer_;
}

To fix your example

TRY::TRY(TRY const & copyTRY){
    int a = *copyTRY.pointer;
    pointer = new int(a);
}