Virtual function and public inheritance

#include <iostream>
using namespace std;

class BaseClass {
public:
  virtual void virtualFunction() {
    cout << "Base\n";
  }
};

class DerivedClass1 : public BaseClass {
public:
  void virtualFunction() {
    cout << "First derivation\n";
  }
};

class DerivedClass2 : public BaseClass {
};

int main()
{
  BaseClass baseObject;
  BaseClass *p;
  DerivedClass1 derivedObject1;
  DerivedClass2 derivedObject2;

  p = &baseObject;
  p->virtualFunction();  // access BaseClass's virtualFunction()

  p = &derivedObject1;
  p->virtualFunction(); // access DerivedClass1's virtualFunction()

  p = &derivedObject2;
  p->virtualFunction(); 

  return 0;
}

Related examples in the same category

1.	A simple example using a virtual function.
2.	Virtual functions are hierarchical.
3.	Virtual function: respond to random events
4.	Use virtual function to define interface.
5.	Virtual functions retain virtual nature when inherited.
6.	Virtual function and three level inheritance
7.	Virtual function for two derived classes
8.	Class pointer and virtual function

Virtual function and public inheritance : Virtual « Function « C++

Related examples in the same category