Chapter 15, Problem 51RQE

Explanation of Solution

Creating pointers to base class:

The pointer object can be created to a base class and it uses “*” before the object. This object can be assigned to the address of the derived class.

Program:

The below program explains the creation of pointer object to the base class.

/*Include required files*/

#include<iostream>

using namespace std;

/*Base Class*/

class One

{

/*Access specifier*/

protected:

/*Declare the variable "base_var" as "int"*/

int base_var;

/*Access specifier*/

public:

/*Constructor*/

One (int num = 10)

{

  /*Assign val to base_var*/

    base_var = num;

}

/*Function getValue()*/

int getValue()

{

/*Return the value of base_var*/

return base_var;

}

};

/*Derived class*/

class Two: public One

{

/*Access specifier*/

private:

/*Declare the variable "der_var" as "int"*/

int der_var;

/*Access specifier*/

public:

/*Constructor*/

Two(int num = 30 )

{

/*Assign “val” to “der_var” */

der_var = num;

}

/*Function getValue()�...