Deleting C++ pointers to an object

Question

I thought that the delete command would free up memory I allocated. Can someone explain why it seems I still have the memory in use after delete?

class Test
{
pu         


        

Answer 1

Pointers are a container for an address in memory. You can always use a declared pointer, but unless it's initialized to memory that you own, expect confusion and worse.

Test *e;
e->time = 2;

also compiles and won't work. Minimize this type of confusion so:

{
  boost::scoped_ptr e(new Test);

  e->time = 1;
  cout << e->time << endl;

  e->time = 2;
  cout << e->time << endl;
}

No new/delete needed, just enclosing braces to define the scope, and an appropriate smart pointer.