some newbie question

[C++]

hi all, i am not-so-new to C++, but then ,yea, a newbie XD ok, here is the question. first i have a base class call Item, and it have 3 sub class. Now i need to make an array total of 100 item, that can store any of that 3 sub class of Item class, so the , question is, how do i need to declare the...