You want to design a system where different devices can be turned on and off, but they do not share a common base class. How can interfaces help?

hard🚀 Application Q8 of 15

C Sharp (C#) - Interfaces

ADefine an interface with TurnOn and TurnOff methods and implement it in each device class

BCreate a base class with TurnOn and TurnOff methods and inherit all devices

CUse abstract classes instead of interfaces for unrelated devices

DUse static methods to control devices without interfaces

Step-by-Step Solution

Solution:

Step 1: Understand problem constraints
Devices are unrelated and cannot share a base class, so inheritance is not an option.
Step 2: Apply interfaces to define common behavior
Interfaces allow unrelated classes to implement common methods like TurnOn and TurnOff.
Final Answer:
Define an interface with TurnOn and TurnOff methods and implement it in each device class -> Option A
Quick Check:
Interfaces enable common behavior without inheritance [OK]

Quick Trick: Use interfaces to share behavior across unrelated classes [OK]

Common Mistakes:

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