Class scope variables

This is a discussion on Class scope variables within the C++ Programming forums, part of the General Programming Boards category; Can anyone tell me what the advantage of declaring a class as follows is? Code: class CQueue { // Class ...

  1. #1
    Registered User filler_bunny's Avatar
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    Class scope variables

    Can anyone tell me what the advantage of declaring a class as follows is?
    Code:
    class CQueue
    {
    // Class scope variables
    struct Node { Item item; struct Node *next;};
    
    private:
    ...
    public:
    ...
    };
    What is the benefit of declaring the struct for the queue outside of the scope modifier tags? Woudln't declaring it as public be exactly the same?
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  2. #2
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    Woudln't declaring it as public be exactly the same?

    No, the default access for a class is private. So, the struct in your code is a "nested" struct within your class that has private access--so nothing outside the class can create a Node. Since a struct has a default access of public, the members inside the struct are public, and therefore they can be freely accessed by member functions of the enclosing class.
    Last edited by 7stud; 08-23-2003 at 01:57 AM.

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    Registered User filler_bunny's Avatar
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    Cheers.
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