Three-Way Comparison Result

What this C++ spaceship operator question tests

This is an easy C++ language-knowledge question that checks whether you understand the three-way comparison operator (the spaceship operator, <=>), introduced in C++20. It's a straightforward test of familiarity with modern C++ syntax and what this operator returns.

The spaceship operator is increasingly common in quant and finance codebases where consistent, efficient comparison semantics matter — particularly in sorting, ordering containers, and defining strict weak orderings for custom types. Knowing what it evaluates to and how to interpret its result is a baseline expectation for C++ candidates.

• C++20 features and syntax
• Comparison operators and their return types
• When and why to use three-way comparison