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

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What common approach do C++ compilers use to support the virtual function mechanism?

Dynamic memory allocation

Function inlining

A virtual table (VTABLE) and a virtual pointer (VPTR)

C++ compilers use a virtual table (VTABLE) and a virtual pointer (VPTR) to support the virtual function mechanism.

This is because it allows them to effectively link the virtual functions to their appropriate implementations in order to handle polymorphism at runtime.

Dynamic memory allocation may be used for allocating objects and their associated virtual tables, but it is not the actual approach used for the virtual function mechanism.

Function inlining is a compiler optimization technique and does not specifically relate to virtual functions.

Lambda functions, while a feature in C++, do not directly support the virtual function mechanism and are not linked to virtual tables.

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