C Class's characteristics (from other web site)

C Class is one derived from class cbase.
The cbase class has the following main characteristics:
* Data members are always zeroed upon construction if an object is created on the heap because operator new () is overloaded.
* Cbase has a virtual destructor
* Cbase has private copy constructor and assignment operator thus, the following characteristics of C classes arise:
* They shoshould always be allocated on the heap to ensure zero-initialization.
* They inherit the virtual destructor of the base class, so can be guaranteed to be cleaned up correctly.
* They need an explicit copy constructor or assignment operator if there is clear intention that a special class will support copying C classes typically have ownership of other C classes or resources that need cleanup. since these resources often have non-trivial construction and, because of the possibility that a leave might occur during the construction process, C classes typically use the two-phase construction idiom.