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9.2

C# Brain Bench Question

Asked by John500 in Microsoft Visual C#.Net, C# Programming Language, .Net Editors & IDEs

Tags: .NET C#

The answer to the queston below is number 1:

1) The DVD class declaration is wrong; you must specify the class first then any interfaces.

Is it right to say then this would be an acceptable declaration:

public class DVD : Media,  IMovie    ??

public abstract class Media
{
      public abstract byte[] Read();
      public abstract byte[] Read(long numBytes);
      public abstract void Write(byte[] data);
}

public interface IMovie
{
      string Title { get; set; }
      int Zone { get; set; }
}

public class DVD : IMovie, Media
{
      // implementation details
}

What is WRONG with the sample above?
Choice 1. The DVD class declaration is wrong; you must specify the class first then any interfaces.
Choice 2. C# does not support multiple inheritance.
Choice 3. You must declare the interface as static when using multiple inheritance.
Choice 4. You cannot mix interfaces and classes when using multiple inheritance.
Choice 5. You cannot use multiple inheritance when an abstract class is involved.
[+][-]09/20/09 03:10 PM, ID: 25379229Accepted Solution

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About this solution

Zones: Microsoft Visual C#.Net, C# Programming Language, .Net Editors & IDEs
Tags: .NET C#
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Solution Provided By: zwei
Participating Experts: 1
Solution Grade: A
 
[+][-]09/20/09 06:57 PM, ID: 25379855Author Comment

Often, when Experts are collaborating with members who have asked questions, they will request additional information about the problem. Askers respond with an author comment like this one.

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