C ++ static member variable nesting class allocation reclaim memory

Memory for allocating Nested classes:

# Include <stdio. h>

# Include <assert. h>

Class CA

{

Public:

Inline static CA * GetInstance (void)

{

Assert (m_instance! = NULL );

Return m_instance;

}

Void Print (void)

{

Puts ("run the Print function of the main class ");

}

Class Garbage // nested class used to allocate memory

{

Public:

Garbage (int I, int j)

{

Printf ("Garbage memory allocation start: % d % dn", I, j );

M_instance = new CA (123123,234 234234 );

}

~ Garbage ()

{

Delete m_instance;

Puts ("Garbage completion ");

}

};

Static Garbage m_garbage;

Protected:

Friend class Garbage;

CA (int I, int j) {printf ("Main class constructor run: % d % dn", I, j );}

~ CA () {printf ("Main class destructor running, ended oh n ");}

Static CA * m_instance;

};

CA * CA: m_instance = NULL;

CA: Garbage CA: m_garbage (2, 3 );

Int main ()

{

CA * cmb = CA: GetInstance ();

Cmb-> Print ();

Return 0;

}