#include <iostream>
#include <memory>
#include <vector>
#include <cstdlib>
using namespace std;
 
class Component {
public:
	virtual ~Component(){}
	virtual shared_ptr<Component> Clone() const = 0;
};
 
class Special : public Component {
	int someNumber;
	void* dangerousPointer;
public:
	Special(const Special& other) : someNumber{other.someNumber} {
		// TODO: clone dangerous pointer if such thing exists
	};
	Special(int someNumber) : someNumber{someNumber} {}
 
	int getSomeNumber() { return someNumber; }
	
	virtual shared_ptr<Component> Clone() const override {
		return make_shared<Special>(*this);
	}
};

class Holder {
public:
	vector<shared_ptr<Component>> components;
	
	Holder(){
		this->components.push_back(shared_ptr<Component>(new Special(40)));
		this->components.push_back(shared_ptr<Special>(new Special(30)));
	}
};
 
int main() {
	cout << "Running..." << endl;
	Holder holder;
	auto other = holder.components[0]->Clone();
	cout << dynamic_cast<Special*>(other.get())->getSomeNumber() << endl;
	system("pause");
	return 0;
}