parent class's child object list

Hi All
     Is there any alternative way to let parent class hold a vector of
its child class's objects?
I meant when i create an object from the child class, in the parent
class, i am able to reference that object.

#include <string>
#include <vector>
#include <iostream>

using namespace std;

class mother{
        private:
        protected:
                vector <void *>list;
                mother(){
                }
        public:
                static mother * getInstance(){
                        static mother m;
                        return &m;
                }

                vector <void *> * getList(){
                        return &list;
                }

};

class child : mother{
        public:
                child(){
                        cout<<"child()"<<endl;

mother::getInstance()->getList()->push_back((void *)this);

cout<<"list->size()="<<(int)mother::getInstance()->getList()->size()<<endl;
                }

};

void dumpVector(vector <void *> *v){
        for (int x=0;x<v->size();x++){
                vector <void *>vv=*v;
                int yy=(int)vv[x];
                cout<<(*v)[x]<<endl;
        }

}

int main(){
        dumpVector(mother::getInstance()->getList());
        child *c=new child();
        dumpVector(mother::getInstance()->getList());
        return 0;

}

thanks
from Peter (cmk128@hotmail.com)

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