Memory Leak when using memcpy in c++ -

here pseudo code:

class product{ //code }; class productdiscount:public product{ //code };  class cart{  product ** products; int noelem; }; 

and had put kind of products inside cart using cart += &product1;(where product1 can of type product or productdiscount)

i did overloading += operator , here code:

void operator+=(produs * prod){      produs ** copie = new produs*[this->n];     (int = 0; < n; i++)         memcpy(&copie[i], &produse[i], 4);        this->n += 1;      this->produse = new produs*[this->n];     (int = 0; < this->n - 1; i++)         memcpy(&produse[i], &copie[i], 4);       memcpy(&produse[n - 1], &prod, sizeof(copie[0]));   }  void operator+=(produsdiscount * prod){          produs ** copie = new produs*[this->n];         (int = 0; < n; i++)             memcpy(&copie[i], &produse[i], 4);          this->n += 1;          this->produse = new produs*[this->n];         (int = 0; < this->n - 1; i++)             memcpy(&produse[i], &copie[i], 4);         memcpy(&produse[n - 1], &prod, sizeof(copie[0]));      } 

now, want know if there way of doing this. want know if i'm generating memory leak when use memcpy , if so, how avoid it.