uint32_t

What this C++ type-system interview question tests

This is an easy C++ language-knowledge question that probes your understanding of fixed-width integer types and how they behave in common operations. It's the kind of foundational check interviewers use to confirm you can read and reason about code accurately, especially when working with low-level types that matter in performance-critical systems.

The question asks you to trace through a code snippet and predict its output. Success depends on knowing the exact semantics of the type in question—its size, signedness, overflow behaviour, and how it interacts with common operations like arithmetic, comparisons, or I/O. These details are easy to get wrong if you haven't internalized them, but they're essential when writing robust financial or systems software.

• Fixed-width integer semantics in C++11 and later
• Overflow and underflow behaviour
• Type casting and implicit conversions
• Output formatting and representation