Is a pointer a pointer?

What this C++ pointer-semantics interview question tests

This is a medium-difficulty C++ language-knowledge question that probes your understanding of pointer types and reference semantics. Firms like Arista—where systems programming precision matters—use questions like this to verify that you can reason carefully about what a pointer actually refers to, especially in contexts where type aliases or declarations might obscure the underlying memory model.

To answer correctly, you need to trace through a code snippet and identify whether a given declaration or expression creates a pointer, a reference to a pointer, or something else entirely. The distinction matters because it determines what operations are valid and what the runtime behaviour will be. Questions in this vein often catch candidates who have intuitive familiarity with pointers but have not internalized the formal rules of C++ type syntax.

• Pointer declaration syntax and type aliasing
• Pointer-to-pointer vs. reference-to-pointer
• Decay and composite type rules