Why this fails - confusing

This is a discussion on Why this fails - confusing within the C++ Programming forums, part of the General Programming Boards category; please see the comments in code, can someone tell me why it works this way and fails the other way. ...

  1. #1
    Registered User
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    15

    Why this fails - confusing

    please see the comments in code, can someone tell me why it works this way and fails the other way. i was trying to access the elements of the enum nested inside Logger class...
    Code:
    class Logger
    {
    public:
    	enum Level 
    	{
    		Debug, Warn, Error
    	};
    };
    
    int main()
    {
    	cout << Logger::Debug << endl; // Works.
    	cout << Logger::Level::Debug << endl; // Fails!
    	return 0;
    }

  2. #2
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    Perhaps because the first one is the proper way to do it?

  3. #3
    C++まいる!Cをこわせ! Elysia's Avatar
    Join Date
    Oct 2007
    Posts
    22,765
    Because enums are not considered as namespaces, but is placed inside the owning class.
    Therefore the first is valid and the second is invalid.
    Quote Originally Posted by Adak View Post
    io.h certainly IS included in some modern compilers. It is no longer part of the standard for C, but it is nevertheless, included in the very latest Pelles C versions.
    Quote Originally Posted by Salem View Post
    You mean it's included as a crutch to help ancient programmers limp along without them having to relearn too much.

    Outside of your DOS world, your header file is meaningless.

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