Reputation: 1079
I have a base class named Cell (other class has a pointer to an object of this class), and 3 derivated classes CellA, CellB and CellC. When a cell is dead, the pointer points to Cell, in other case is alive (A,B or C). How to know what is pointing that pointer in this moment to act??
Upvotes: 0
Views: 230
Reputation: 206616
In case your classes are polymorphic You can use dynamic_cast.
dynamic_cast
allows you to safely downcast pointers.
In your case, You can use dynamic_cast
to check if the Base class pointer is pointing to a derived instance, dynamic_cast
can report you that information.
Upvotes: 1
Reputation: 4184
Maybe you need a little bit different logic, take a look on states design pattern I think it could help you. Normally the casting is a bad thing and should be avoided. If you need a casting then you probably have a design issue....
Good Luck
Upvotes: 1