Mastering C++: A Comprehensive Quiz Based on 'Thinking in C++

Question: 1 / 565

In a SuperVar class example, what C++ language construct is used to safely manage the type of data stored in a union?

A template

An inheritance hierarchy

An enumeration

An enumeration (option C) allows for creating a set of symbolic constants, which can be used to specify the data type within a union. This helps to ensure type safety and prevent errors when accessing and manipulating the data stored in the union.

Option A, a template, is incorrect because templates are used for creating generic code that can work with different data types, but they do not directly manage the types within a union.

Option B, an inheritance hierarchy, is incorrect because it is a feature used for code organization and creating relationships between classes, but it does not address the safe management of data types within a union.

Option D, a virtual function, is incorrect because it is used for polymorphism and dynamic binding, but it does not handle the type management within a union.

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A virtual function

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