#include <iostream>
#include <string>
using namespace std;

class Program {
protected:
    string name;
public:
    Program(string n)
        : name(n)
    { }
    virtual void print() = 0;
    virtual ~Program() { };
};

class Freeware : public Program {
public:
    Freeware(string n)
        : Program(n)
    { }
    void print() {
        cout << "Free : " << name << endl;
    }
};

class Shareware : public Program {
    int price;
public:
    Shareware(string n, int c)
        : Program(n), price(c)
    { }
    void print() {
        cout << "Share: "  << name
             << ", price " << price << endl;
    }
    int getPrice() {
        return price;
    }
};

int total(Program* prgs[], int size) {
    Shareware* sh;
    int tot = 0;
    for (int i = 0; i < size; ++i) {
        prgs[i]->print();
        if ( sh = dynamic_cast<Shareware*>(prgs[i]) )
            tot += sh->getPrice();
    }
    return tot;
}

int main() {
    Freeware anjuta("Anjuta"); Shareware wz("WinZip",30);
    Freeware mysql("MySQL");   Shareware rar("RAR",25);

    Program* prgs[] = { &anjuta, &wz, &mysql, &rar };

    int tot = total(prgs, sizeof(prgs)/sizeof(prgs[0]));

    cout << "\nTotal: $" << tot << endl;
}