C Sharp (C#) - Interfaces
Find the problem in this code snippet:
interface ITest { void Run() => Console.WriteLine("Run"); } class Test : ITest { public void Run(int x) => Console.WriteLine(x); }
Find the problem in this code snippet: interface ITest { void Run() => Console.WriteLine("Run"); } class Test : ITest { public void Run(int x) => Console.WriteLine(x); }
medium📝 Debug Q7 of 15
Step-by-Step Solution
Solution:
Step 1: Compare interface and class method signatures
Interface has Run() with no parameters; class has Run(int x) with one parameter.Step 2: Understand override requirements
Class method is an overload, not an override due to signature mismatch. The default interface method is still used for parameterless calls. No compile or runtime error.Final Answer:
Class does not override interface method due to different signature. -> Option DQuick Check:
Method signature must match to override = A [OK]
Quick Trick: Method signatures must match exactly to override [OK]
Common Mistakes:
MISTAKES- Assuming overload overrides interface method
- Believing default methods cannot exist
- Thinking access modifier causes error here
Master "Interfaces" in C Sharp (C#)
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