#include <iostream>
using namespace std;
class Base
{
public:
Base()
{ cout<<"Base is created \n"; }
~Base()
{ cout<<"Base is destructed \n"; }
int base_function (int a)
{
cout<<"In base \n";
return a;
}
virtual int increment(int a) { return ++a; }
virtual int decrement(int a) { return --a; }
};
class Derived1: public Base
{
public:
Derived1()
{ cout<<"Derived1 is now created \n"; }
int increment(int a)
{
cout<<"In Derived1 \n";
return ++a;
}
int square(int a)
{
cout<<"In Derived1 \n";
return a*a;
}
~Derived1()
{ cout<<"Derived1 is now destructed \n"; }
};
class Derived2: public Derived1
{
public:
Derived2()
{ cout<<"Derived2 is now created \n"; }
virtual int increment(int a)
{
cout<<"In Derived2 \n";
return ++a;
}
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