Object-oriented programming · interview question

Which statement about interfaces in modern C# (C# 8 and later) is true?

Multiple choiceEasy

An interface can provide a default implementation for a method.An interface can declare instance fields.A class can inherit from more than one abstract class.Interface members are private unless marked public.

Answer and explanation

Correct answer

A. An interface can provide a default implementation for a method.

Why

Since C# 8, interfaces can include default interface methods, so a member can be added to an interface without breaking existing implementers. They still can't have instance fields, and a class still has only one base class.

References

Microsoft Learn: Object-oriented programming (C#)

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Which statement about interfaces in modern C# (C# 8 and later) is true?

Correct answer

Why

References

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