[Solved] You have two interfaces:interface IReadable { void Read(); } interface IWritable { void Write(); }How can a class File implement both interfaces correctly? | C Sharp (C#)

C Sharp (C#) - Interfaces

You have two interfaces:

interface IReadable { void Read(); }
interface IWritable { void Write(); }

How can a class File implement both interfaces correctly?

Aclass File : IReadable, IWritable { public void Read() {} public void Write() {} }

Bclass File : IReadable { public void Read() {} } class File : IWritable { public void Write() {} }

Cclass File : IReadable & IWritable { public void Read() {} public void Write() {} }

Dclass File implements IReadable, IWritable { public void Read() {} public void Write() {} }

Step-by-Step Solution

Solution:

Step 1: Recall C# syntax for multiple interface implementation
Use colon ':' followed by comma-separated interface names.
Step 2: Check syntax options
The correct syntax is 'class File : IReadable, IWritable { ... }'. Using 'implements' keyword is Java syntax, not C#; declaring the same class twice is invalid; using '&' between interfaces is incorrect.
Final Answer:
class File : IReadable, IWritable { public void Read() {} public void Write() {} } -> Option A
Quick Check:
Multiple interfaces use ':' and commas [OK]

Quick Trick: Use ':' and commas to implement multiple interfaces [OK]

Common Mistakes:

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