Is this a valid enum declaration?

[chub...@gmail.com]

enum {T1, T2, T3} MYTYPE1;

My interpretation is that this should be ill-formed as the well-formed declaration is 

enum MYTYPE2 {T1, T2, T3};

Both G++4.6 and VS2010 accept the above declaration. However both don't allow the type MYTYPE1 to be used in the type-specifier.

If it is indeed allowed, what is the likely use of it.

[Richard Smith]

The general form of a simple-declaration is:

attribute-specifier-seq decl-specifier-seq init-declarator-list ;

The 'enum {T1, T2, T3}' is the decl-specifier-seq here, and the init-declarator-list is a list of additional entities being defined based on that type (in this case, 'MYTYPE1' is a variable of the enumeration type). The behavior is just like you'd written:

enum {T1, T2, T3};

decltype(T1) MYTYPE1;

[Vicente J. Botet Escriba]

Le 26/11/12 07:07, chub...@gmail.com a �crit :

> enum {T1, T2, T3} MYTYPE1;

Note that this is the declaration of variable MYTYPE1 of type enum {...}.

Vicente

[ajay kumar]

http://comsciguide.blogspot.com/2015/01/enum-make-u-r-names-as-data-types.html

[David Krauss]

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