..:: Classes and Objects on C# related Questions and Answers

Classes and Objects on C# related Questions and Answers

Question 1 : Output from selective set of code is :

  class box

      public int volume;

      int width;

      int height;

      int length;

      public box ( int w, int h, int l)

1. 0
2. Code executes successfully but prints nothing
3. Compile time error
4. 180
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Question 2 : The method called by clients of a class to explicitly release any resources like network,connection,open files etc.When the object is no longer required?
1. Finalize()
2. End()
3. Dispose()
4. Close()
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Question 3 : Select the output for the following set of code :

    static void Main(string[] args)

        int x = 4 ,b = 2;

        x -= b/= x * b;

        Console.WriteLine(x + " " 

                                                  1.  4 2 
  2.  0 4 
 3.  4 0 
  4.  None of mentioned 

                                                
                                                    
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Question 4 : Select the output for the following set of code :

    static void Main(string[] args)

       int X = 6,Y = 2;

       X  *= X / Y;

       Console.WriteLine(X);

       Console

                                                  1.  12 
  2.  6 
 3.  18 
  4.  Compile time error 

                                                
                                                    
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Question 5 : Select output for the set of code :

 static void Main(string[] args)

     int []a = { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10};

     func(ref

                                                  1.  numbers are : 2 4 6 8 10 
  2.  numbers are : 3 5 7 9 11 
 3.  numbers are : 2 3 4 5 6 
  4.  None of the mentioned 

                                                
                                                    
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Question 6 : Select the output for the following set of code :

  static void Main(string[] args)

      int a = 10 , b = 20;

      Console.WriteLine("Result before swap is: "+ a +" "+b);

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Question 7 : “A mechanism that binds together code and data in manipulates, and keeps both safe from outside interference and misuse.In short it isolates a particular code and data from all other codes and data. A well-defined interface controls the access to that particular code and data.”
1. Abstraction
2. Polymorphism
3. Inheritance
4. Encapsulation
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Question 8 : What is the return type of destructor ?
1. int
2. void
3. float
4. none of the mentioned
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Question 9 : Select wrong statement about destructor in C#?
1. A class can have one destructor only
2. Destructors cannot be inherited or overloaded
3. Destructors can have modifiers or parameters
4. All of the mentioned
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