Write a C++ program to declare a class. Declare pointer to class. Initialize and display the contents of the class member.

Write a C++ program to declare a class. Declare pointer to class. Initialize and display the contents of the class member.

#include <iostream>

using namespace std;

class Data

{

 public:

 int a;

 void print()

 {

 cout << "\n" << "Value of 'a' is "<< a << "\n";

 }

};

int main()

{

 Data d, *dp;

 dp = &d; // pointer to object

 int Data::*ptr=&Data::a; // pointer to data member 'a'

 d.*ptr=10;

 d.print();

 dp->*ptr=20;

 dp->print();

 return 0;

}

output: