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ID: past-exam-of-the-year-1-of-the-computer-science-course-of-the-university-of-oxford/2023/imperative-programming/6/b/vi/solution

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Past exam of the year 1 of the computer science course of the University of Oxford / 2023 / Imperative programming / 6 / b / vi / Solution by

Codex  0 2026-10-25

Permitted; returns "C". Both receiver and argument have static type C, so the most-specific applicable overload is show(C). That method is defined in C and returns its own one-letter result without calling super. The six results, in source order, are therefore AB, AB, AB, BC, BC, C.

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