False Reference

What this C++ references question tests

This easy multiple-choice question probes your working knowledge of how references behave in C++. It's the kind of language-fundamentals check that appears in coding interviews when firms want to separate candidates who've written production C++ from those who've only read about it.

To answer questions like this confidently, you need to understand the core rules governing reference binding, lifetime, and comparison—particularly where references differ from pointers and where common misconceptions arise. The question rewards precision: one statement will violate a constraint that the other four respect.

• Reference binding rules and what types can bind
• Lifetime and scope of references
• How references behave in copy and move semantics
• Aliasing and the no-rebinding guarantee