C# Programming - Classes and Objects

Exercise :: Classes and Objects - General Questions

  • Classes and Objects - General Questions
6. 

Which of the following will be the correct output for the C#.NET program given below?

namespace IndiabixConsoleApplication
{ 
    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(); 
        } 
    } 
}

A. 0 0
B. 10 5.4
C. 10 5.400000
D. 10 5
E. None of the above

Answer: Option A

Explanation:

No answer description available for this question. Let us discuss.

7. 

The this reference gets created when a member function (non-shared) of a class is called.

A. True
B. False

Answer: Option A

Explanation:

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8. 

Which of the following statements are correct?

  1. Data members ofa class are by default public.
  2. Data members of a class are by default private.
  3. Member functions of a class are by default public.
  4. A private function of a class can access a public function within the same class.
  5. Member function of a class are by default private.

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

Answer: Option C

Explanation:

No answer description available for this question. Let us discuss.

9. 

Which of the following statements is correct about the C#.NET code snippet given below?

namespace IndiabixConsoleApplication
{ 
    class Sample
    { 
        public int index; 
        public int[] arr = new int[10]; 
        
        public void fun(int i, int val)
        { 
            arr[i] = val;
        }
    }
     
    class MyProgram
    { 
        static void Main(string[] args)
        {
            Sample s = new Sample(); 
            s.index = 20; 
            Sample.fun(1, 5); 
            s.fun(1, 5); 
        } 
    } 
}

A. s.index = 20 will report an error since index is public.
B. The call s.fun(1, 5) will work correctly.
C. Sample.fun(1, 5) will set a value 5 in arr[ 1 ].
D. The call Sample.fun(1, 5) cannot work since fun() is not a shared function.
E. arr being a data member, we cannot declare it as public.

Answer: Option B

Explanation:

No answer description available for this question. Let us discuss.

10. 

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.

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

Answer: Option B

Explanation:

No answer description available for this question. Let us discuss.