hoge.cpp

#include <iostream>
#include <vector>

class Super {
public:
    Super(int v): value(v) {}

    virtual int getValue() const {return value;}

protected:
    int value;
};

class Sub: public Super {
public:
    Sub(int v): Super(v), ratio(1.08) {}

    virtual int getValue() const {return value * ratio;}

private:
    double ratio;
};

using namespace std;

#define ARRSIZ(a) (sizeof(a)/sizeof((a)[0]))
#define ARRBGN(a) (a)
#define ARREND(a) ((a)+ARRSIZ(a))

int main()
{
    vector<Super> values;
    values.push_back(Super(100));
    values.push_back(Sub(100));

    for (vector<Super>::iterator i = values.begin(); i != values.end(); ++i)
	cout << i->getValue() << endl;
    cout << Sub(100).getValue() << endl;
    Super v = Sub(100);
    cout << v.getValue() << endl;

    return 0;
}