incomplete type is not allowed while trying to create an array of pointers

Question

I created 2 classes, Branch and Account and I want my Branch class have an array of Account pointers, but i fail to do it. It says that "incomplete type is not allowed". What is wrong with my code?

#include <string>
#include "Account.h"

using namespace std;



    class Branch{

    /*--------------------public variables--------------*/
    public:
        Branch(int id, string name);
        Branch(Branch &br);
        ~Branch();
        Account* ownedAccounts[];    // error at this line
        string getName();
        int getId();
        int numberOfBranches;
    /*--------------------public variables--------------*/

    /*--------------------private variables--------------*/
    private:
        int branchId;
        string branchName;
    /*--------------------private variables--------------*/
    };

Answer 1

Although you can create an array of pointers to forward-declared classes, you cannot create an array with an unknown size. If you want to create the array at runtime, make a pointer to a pointer (which is of course also allowed):

Account **ownedAccounts;
...
// Later on, in the constructor
ownedAccounts = new Account*[numOwnedAccounts];
...
// Later on, in the destructor
delete[] ownedAccounts;

Answer 2

You need to specify the size of the array... You can't just leave the brackets hanging like that without anything inside them.