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How to change the base class variables with the derived class object-c
#include "stdafx.h"
#include <iostream>
using namespace std;

class A
{
public:
  int a,b,c;
  A()
  {
      a=0;
      b=0;
      c=0;
  }
};

class B:public A
{
public:
    void get()
    {
        A *a2 =new A;
        a2->a=10;
        a2->b=20;
        a2->c=30;
        cout<<a2->a<<""<<a2->b<<""<<a2->c<<""<<endl;
        cout<<"Checking!"<<endl;
    }
};

int main()
{
    A *a1 = new A;
    B *b1 = new B;
    cout<<a1->a<<""<<a1->b<<""<<a1->c<<""<<endl;
    b1->a=10;
    b1->b=20;
    b1->c=30;
    cout<<b1->a<<""<<b1->b<<""<<b1->c<<""<<endl;

    b1->get();//cant able to change the variables of the base class object with the derived class object
    cout<<a1->a<<""<<a1->b<<""<<a1->c<<""<<endl;//will print the same values..

    //b1->get();

    return 0;
}

get()

void get()
{
    a=10;
    b=20;
    c=30;
    cout<<a<<b<<c<<endl;
    cout<<"Checking!"<<endl;
}

cout << a << b << c << "n";

cout << this->a << this->b << this->c << "n";