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Which of the following is true about a class implementing multiple interfaces in C#?

easy🧠 Conceptual Q2 of 15
C Sharp (C#) - Interfaces

Which of the following is true about a class implementing multiple interfaces in C#?

AThe class can implement interface members partially
BThe class can implement only some members of the interfaces
CThe class must implement all members of all interfaces
DThe class cannot implement more than two interfaces
Step-by-Step Solution
Solution:
  1. Step 1: Recall interface implementation rules

    A class must provide implementation for all members declared in the interfaces it implements.
  2. Step 2: Apply to multiple interfaces

    When multiple interfaces are implemented, the class must implement all members from each interface fully.
  3. Final Answer:

    The class must implement all members of all interfaces -> Option C
  4. Quick Check:

    Complete implementation required = true [OK]
Quick Trick: All interface members must be implemented fully [OK]
Common Mistakes:
MISTAKES
  • Assuming partial implementation is allowed
  • Thinking some interface members can be skipped
  • Believing there is a limit on number of interfaces

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