Question

I have a list of pointer object *lst[200];

I use this to add one to it:

object a = new object();
a->id = current_amount;
lst[current_amount] = a;
current_amount++;

now I want to add a function delete it:

I simply want to remove this element from array: (I store an id use it to delete it)

    void delete(object *elem)
    {
        if(!elem)
          return;
       for (int i = elem->id ; i < current_amount - 1;i++)
       {
            lst[i] = lst[i + 1];
       }

    }

Question: When to call delete elem? The code above doesn’t free the memory at all…

Answer 1

void deleteElem(object *elem) // you can't call your function 'delete'
    {
        if(!elem)
          return;

       for (int i = elem->id ; i < current_amount - 1;i++)
       {
            lst[i] = lst[i + 1];
       }

       delete elem; // this free's the memory

    }