Disable ads (and more) with a membership for a one time $2.99 payment
What characterizes an anonymous union within a class?
It has no name and can be globally defined
It allows direct access to its members without an object
It cannot contain any constructors or destructors
It requires static declaration if at file scope
The correct answer is: It requires static declaration if at file scope
An anonymous union within a class is a union that is declared without a name, similar to a struct. This can be useful for defining multiple variables together, especially when those variables might not be used at the same time. In this context, the other options are incorrect because - Option A & B: Name and access are not the defining characteristics of an anonymous union, as these can also be present in regular unions. - Option C: Constructors and destructors are not allowed in any type of union, anonymous or not, as unions do not have any instance-specific variables to initialize or destroy. Hence, option D is the only option that accurately describes the special syntax required for defining an anonymous union within a class.