So close to unwinding.

What this C++ code-reading question tests

This is a Cracked-difficulty C++ question that asks you to trace through a code snippet and predict its output. Microsoft and other software firms use questions like this to assess whether candidates read code carefully, understand language semantics precisely, and can mentally execute unfamiliar logic without running it.

The question rewards attention to detail: scoping rules, operator precedence, object lifetime, and subtle interactions between language features can all hide the true output in plain sight. Strong candidates slow down, trace variable states step-by-step, and validate their assumptions about what each line does before answering.

• C++ scoping and variable lifecycle
• Operator semantics and evaluation order
• Type conversions and implicit behavior
• Output stream formatting