I've got a abstract class

class A {
    public:
        virtual void somefunction() = ;
};

and some different classes that inherit this class:

class Ab {
    public:
        void somefunction();
};

etc.

I want to make a vector containing some objects of these classes (how many depends on input parameters) so I can access these easily later. However I'm a bit lost on how to do this. My best idea is

vector<A> *objectsVector;
Ab AbObject;
objectsVector.push_back(AbObject);

However this gives me a huge amout of errors from various .h files in /usr/include/c++

How should i solve this?