[Solved] What is the issue with this code?interface ITest { void Run() => Console.WriteLine("Start"); } class Test : ITest { public void Run() { Console.WriteLine("End"); } } | C Sharp (C#)

C Sharp (C#) - Interfaces

What is the issue with this code?

interface ITest { void Run() => Console.WriteLine("Start"); } class Test : ITest { public void Run() { Console.WriteLine("End"); } }

AThe class method must be explicitly marked 'override' to override the interface default method.

BThe interface method cannot have a body; default methods are not allowed.

CThe class method must have the same accessibility as the interface method and be public.

DThe interface method must be static to have a body.

Step-by-Step Solution

Solution:

Step 1: Check interface method declaration
The interface method 'Run' is a default method with a body, which is valid in C# 8.0+.
Step 2: Check class implementation
The class 'Test' implements 'Run' but the method is declared without an accessibility modifier, so it defaults to private.
Step 3: Understand interface implementation rules
Interface methods must be implemented with public accessibility in the class. Otherwise, the class does not properly implement the interface method.
Final Answer:
Option C -> Option C
Quick Check:
Interface implementations must be public in classes [OK]

Quick Trick: Interface methods must be public in implementing classes [OK]

Common Mistakes:

MISTAKES

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