It is possible to declare a pointer that points to the base class as well as the derived class. One
pointer can point to different classes. For example, X is a base class and Y is a derived class. The
pointer pointing to X can also point to Y.
13.15 Write a program to declare a pointer to the base class and access the member
variable of base and derived class.
// Pointer to base object //
#include<iostream.h>
#include<conio.h>
class A
{
public :
int b;
void display()
{
cout<<“b = ” <<b <<“\n”;
}
};
class B : public A
{
public :
int d;
void display()
{
cout<<“b= ...
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