-- card: 54839 from stack: in
-- bmap block id: 0
-- flags: 0000
-- background id: 4755
-- name: 


-- part contents for background part 4
----- text -----
Occasionally this arrangement may lead to difficulties.  Consider a circular definition involving two classes:

    struct    Person:Generic_Class
    {
        Parent      *parent_ptr;
              .
              .
    };

    struct    Parent:Person
    {
              .
              .
    };

The Person class contains an instance variable which is a pointer to a Parent object, and the Parent class is descended from the Person class.

-- part contents for background part 7
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