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  • Question
  • Which of the following statements are correct about the this reference?

    1. this reference can be modified in the instance member function of a class.
    2. Static functions of a class never receive the this reference.
    3. Instance member functions of a class always receive a this reference.
    4. this reference continues to exist even after control returns from an instance member function.
    5. While calling an instance member function we are not required to pass the this reference explicitly.


  • Options
  • A. 1, 4
  • B. 2, 3, 5
  • C. 3, 4
  • D. 2, 5
  • E. None of these

  • Correct Answer
  • 2, 3, 5 


  • Classes and Objects problems


    Search Results


    • 1. Which of the following statements are correct?

      1. Instance members of a class can be accessed only through an object of that class.
      2. A class can contain only instance data and instance member function.
      3. All objects created from a class will occupy equal number of bytes in memory.
      4. A class can contain Friend functions.
      5. A class is a blueprint or a template according to which objects are created.

    • Options
    • A. 1, 3, 5
    • B. 2, 4
    • C. 3, 5
    • D. 2, 4, 5
    • E. None of these
    • Discuss
    • 2. Which of the following statements is correct about the C#.NET code snippet given below?

      class Student s1, s2; // Here 'Student' is a user-defined class.
      s1 = new Student(); 
      s2 = new Student();

    • Options
    • A. Contents of s1 and s2 will be exactly same.
    • B. The two objects will get created on the stack.
    • C. Contents of the two objects created will be exactly same.
    • D. The two objects will always be created in adjacent memory locations.
    • E. We should use delete() to delete the two objects from memory.
    • Discuss
    • 3. Which of the following statements is correct about classes and objects in C#.NET?

    • Options
    • A. Class is a value type.
    • B. Since objects are typically big in size, they are created on the stack.
    • C. Objects of smaller size are created on the heap.
    • D. Smaller objects that get created on the stack can be given names.
    • E. Objects are always nameless.
    • Discuss
    • 4. Which of the following will be the correct output for the C#.NET program given below?

      namespace CuriousTabConsoleApplication
      { 
          class Sample
          { 
              int i; 
              Single j; 
              public void SetData(int i, Single j)
              { 
                  this.i = i; 
                  this.j = j;
              }
              public void Display()
              { 
                  Console.WriteLine(i + " " + j);
              } 
          } 
          class MyProgram
          { 
              static void Main(string[ ] args)
              {
                  Sample s1 = new Sample(); 
                  s1.SetData(36, 5.4f); 
                  s1.Display(); 
              } 
          } 
      }

    • Options
    • A. 0 0.0
    • B. 36 5.4
    • C. 36 5.400000
    • D. 36 5
    • E. None of the above
    • Discuss
    • 5. Which of the following statements are correct about the C#.NET code snippet given below?

      sample c;
      c = new sample();
      1. It will create an object called sample.
      2. It will create a nameless object of the type sample.
      3. It will create an object of the type sample on the stack.
      4. It will create a reference c on the stack and an object of the type sample on the heap.
      5. It will create an object of the type sample either on the heap or on the stack depending on the size of the object.

    • Options
    • A. 1, 3
    • B. 2, 4
    • C. 3, 5
    • D. 4, 5
    • E. None of these
    • Discuss
    • 6. Which of the following will be the correct output for the C#.NET program given below?

      namespace CuriousTabConsoleApplication
      { 
          class Sample
          { 
              int i; 
              Single j; 
              public void SetData(int i, Single j)
              { 
                  i = i;
                  j = j;
              }
              public void Display()
              { 
                  Console.WriteLine(i + " " + j);
              } 
          } 
          class MyProgram
          { 
              static void Main(string[ ] args)
              { 
                  Sample s1 = new Sample();
                  s1.SetData(10, 5.4f); 
                  s1.Display(); 
              } 
          } 
      }

    • Options
    • A. 0 0
    • B. 10 5.4
    • C. 10 5.400000
    • D. 10 5
    • E. None of the above
    • Discuss
    • 7. What will be the output of the C#.NET code snippet given below?

      namespace CuriousTabConsoleApplication
      { 
          class Baseclass
          { 
              public void fun()
              { 
                  Console.Write("Base class" + " ");
              } 
          } 
          class Derived1: Baseclass
          { 
              new void fun()
              {
                  Console.Write("Derived1 class" + " "); 
              } 
          } 
          class Derived2: Derived1
          { 
              new void fun()
              { 
                  Console.Write("Derived2 class" + " ");
              }
          }
          class Program
          { 
              public static void Main(string[ ] args)
              { 
                  Derived2 d = new Derived2(); 
                  d.fun(); 
              } 
          } 
      }

    • Options
    • A. Base class
    • B. Derived1 class
    • C. Derived2 class
    • D. Base class Derived1 class
    • E. Base class Derived1 class Derived2 class
    • Discuss
    • 8. Which of the following are reuse mechanisms available in C#.NET?

      1. Inheritance
      2. Encapsulation
      3. Templates
      4. Containership
      5. Polymorphism

    • Options
    • A. 1, 4
    • B. 1, 3
    • C. 2, 4
    • D. 3, 5
    • Discuss
    • 9. How can you prevent inheritance from a class in C#.NET?

    • Options
    • A. Declare the class as shadows.
    • B. Declare the class as overloads.
    • C. Declare the class as sealed.
    • D. Declare the class as suppress.
    • E. Declare the class as override.
    • Discuss
    • 10. Which of the following statements should be added to the subroutine fun( ) if the C#.NET code snippet given below is to output 9 13?

      class BaseClass
      {
          protected int i = 13;
      }
      class Derived: BaseClass
      {
          int i = 9; 
          public void fun()
          {
              // [*** Add statement here ***]
          } 
      }

    • Options
    • A. Console.WriteLine(base.i + " " + i);
    • B. Console.WriteLine(i + " " + base.i);
    • C. Console.WriteLine(mybase.i + " " + i);
    • D. Console.WriteLine(i + " " + mybase.i);
    • E. Console.WriteLine(i + " " + this.i);
    • Discuss


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