reference: http://en.wikipedia.org/wiki/Polymorphism_in_object-oriented_programming

c++ polymorphic example.cpp

#include <iostream>
#include <string>
 
using namespace std;
 
class Vehicle
{
    public:
        Vehicle(const string& name) : name(name) {}
        virtual string move() = 0;
        const string name;
};
 
class Car : public Vehicle
{
        public:
        Car(const string& name) : Vehicle(name) {}
        virtual string move() { return "Vroom"; }
};
 
class Bus : public Vehicle
{
        public:
        Bus(const string& name) : Vehicle(name) {}
        virtual string move() { return "Putput"; }
};
 
int main()
{
        Vehicle* foo[] =
        {
                new Car("Kit"),
                new Car("Herby"),
                new Bus("StartupBus")
        };
 
        for(int i = 0; i < 3; i++)
        {
                cout << foo[i]->name << ": " << foo[i]->move() << endl;
                delete foo[i];
        }
        return 0;
}