Answer to Question #268202 in C++ for Amit

Question #268202

Define a class ABC. Derive two classes BBC and KBC from ABC. All the classes contains same member function name as display(). The base class pointer always holds the derived class objects.


a) Write a program such that base class pointer or reference will always access/call the base version of the members available in derived class, do not have any access to the derived class members.


b) Write a program such that base class pointer or reference will always access/call the derived version of the members available in derived class, do not have any access to the base class members.


Write down the concepts used for bit a) and b) separately.

1
Expert's answer
2021-11-19T17:16:10-0500
#include <iostream>
using namespace std;
class ABC
{
public:
   void display()
   {
      cout << "In base\n";
   }
};
class BBC : public ABC
{
public:
   void display()
   {
      cout << "Welcome";
   }
};
class KBC : public ABC
{
public:
   void display();
};


int main()
{
   ABC *c;
   BBC b;
   c = &b;
   c->display();
}

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