Rack.cpp

#include <iostream>

class Rack {

	public:

	Rack(int i): m_i(i)
	{ }

	int geti()
	{
		return m_i;
	}

	protected:
	int m_i;
};

void
do_something_with_racks(Rack *list[], size_t len)
{
	for (size_t i = 0; i < len; i++)
		std::cout << list[i]->geti() << std::endl;
}

int
main(int argc, char **argv)
{
	Rack one(1);
	Rack answer(42);
	Rack vegeta(9001);
	Rack *list[] = {&one, &answer, &vegeta};

	do_something_with_racks(list, (sizeof(list) / sizeof(*list)));

	return (0);
}