Difficulty: Medium
Correct Answer: 25, 36
Explanation:
Introduction / Context:
The original snippet contains a likely typographical error: fun1 is called but funl is defined. Assuming the intended name is fun1, this question examines ref and out semantics and arithmetic updates.
Given Data / Assumptions:
Concept / Approach:
ref passes an existing variable for in-place modification. out requires assignment inside the method before use. After both calls, Console.WriteLine prints the final values.
Step-by-Step Solution:
Verification / Alternative check:
Trace variable states after each call or run an equivalent small program.
Why Other Options Are Wrong:
Common Pitfalls:
Overlooking the typo and concluding a compile error; the conceptual goal is to assess ref/out effects.
Final Answer:
25, 36
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