It's hidden

What this C++ code-analysis question tests

This is an easy multiple-choice question that asks you to identify a real issue—or confirm the absence of one—in a short C++ code snippet. It assesses your ability to spot common pitfalls and language-specific gotchas under time pressure, a skill quant firms value when reviewing candidate code and evaluating debugging ability.

Questions of this type reward careful reading of syntax, scoping rules, and type behavior rather than algorithmic insight. They often uncover whether a candidate's C++ knowledge extends beyond surface-level syntax to the subtle interactions between language features that cause bugs in production systems.

• Type conversions and implicit casting
• Memory and pointer semantics
• Scope and lifetime of variables
• Operator precedence and associativity