// Modifies code from text using a vector instead of an array 

#include <iostream>
#include <cstdlib>
#include <vector>

using namespace std;

class TradesPerson 
{
    public:
        virtual void sayHi() { cout << "Hi from on top." << endl; }
};
class Tinker : public TradesPerson 
{
    public:
        virtual void sayHi() { cout << "Hi, I tinker." << endl; }
};
class Tailor : public TradesPerson 
{
    public:
        virtual void sayHi() { cout << "Hi, I tailor." << endl;}
};
int main(int argc, char *argv[])
{
    vector<TradesPerson*> tradePeople;
    for(int i = 0; i < 10; i++){
        int which = 1 + rand() % 3;
        switch(which){
            case 1: tradePeople.push_back(new TradesPerson); break;
            case 2: tradePeople.push_back(new Tinker); break;
            case 3: tradePeople.push_back(new Tailor); break;
        }
    }
   
    for(vector<TradesPerson*>::iterator it = tradePeople.begin();
        it != tradePeople.end();
        ++it) {
            (*it) -> sayHi();  // run time binding
    }
     for(vector<TradesPerson*>::iterator it = tradePeople.begin();
        it != tradePeople.end();
        ++it) {
            delete (*it);
    }
    
    system("PAUSE");
    return EXIT_SUCCESS;
}