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Are we compatible? is a medium quant interview question on language knowledge in Cpp, asked at Quant.
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This is a medium-difficulty C++ question that probes your ability to reason about language semantics and subtle behavior in code. It's the kind of problem quant firms use to distinguish candidates who understand the standards from those who rely on pattern matching or guesswork.
To solve it, you'll need to trace through the code mentally, paying close attention to type conversions, operator precedence, scope rules, or other language mechanics that determine what actually gets executed. The answer hinges on understanding how the C++ compiler interprets the given snippet—not on domain knowledge or heavy computation.
HRT.