[Solved] Identify the error in this code:interface IShape { double Area(); }class Circle : IShape { public double Area { return 3.14 * radius * radius; } private double radius; } | C Sharp (C#)

C Sharp (C#) - Interfaces

Identify the error in this code:

interface IShape { double Area(); }
class Circle : IShape { public double Area { return 3.14 * radius * radius; } private double radius; }

Aradius must be public

BCircle must not implement IShape

CInterface methods cannot return double

DArea should be a method, not a property

Step-by-Step Solution

Solution:

Step 1: Compare interface and class member signatures
IShape declares Area as a method, but Circle defines Area as a property.
Step 2: Understand implementation requirements
Class must implement interface methods exactly as declared, so Area must be a method.
Final Answer:
Area should be a method, not a property -> Option D
Quick Check:
Interface method must be implemented as method [OK]

Quick Trick: Match method signatures exactly when implementing interfaces [OK]

Common Mistakes:

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