Re: Confused .. What is happenning here

From:
"terminator" <farid.mehrabi@gmail.com>
Newsgroups:
comp.lang.c++
Date:
28 Mar 2007 06:44:23 -0700
Message-ID:
<1175089463.293618.316060@n76g2000hsh.googlegroups.com>
On Mar 28, 2:25 pm, vb.h...@gmail.com wrote:

Hi all,
I am new to C++ and was just reading about polymorphism. I tried to
write a very simple program. Then a curious thought came into my mind.
And instead of using pointer in polymorphism, i used a reference. And
both of them printed the same thing.
I want to know what is going on under the hood.

#include <iostream>

using namespace std;

class base
{
public:
    virtual void print()
    {
        cout<< "In Base Class"<<endl;
    }

};

class derived : public base
{
public:
    virtual void print()
    {
        cout<<"In Derived Class"<<endl;
    }

};

int main()
{
  //using pointer
  base *b = new derived();
  derived d;
  b->print();

  //using reference
  base &c = d;
  c.print();

  return 0;

}

Regards,
vb


under the hood: refference is compiled as if it where a pointer but it
improves C++ interfacing a lot.

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