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  • Question

  • Which of the following will be the correct result of the statement b = a in the C#.NET code snippet given below? 

    struct Address
{
    private int plotno;
    private String city; 
}
Address a = new Address(); 
Address b; 
b = a;


  • Options
  • A. All elements of a will get copied into corresponding elements of b.
  • B. Address stored in a will get copied into b.
  • C. Once assignment is over a will get garbage collected.
  • D. Once assignment is over a will go out of scope, hence will die.
  • E. Address of the first element of a will get copied into b.

  • Correct Answer
  • All elements of a will get copied into corresponding elements of b. 

    • Structures problems

    Search Results

    • 1. Which of the following statements are correct about Structures used in C#.NET?

      1. A Structure can be declared within a procedure.
      2. Structs can implement an interface but they cannot inherit from another struct.
      3. struct members cannot be declared as protected.
      4. A Structure can be empty.
      5. It is an error to initialize an instance field in a struct.

    • Options
    • A. 1, 2, 4
    • B. 2, 3, 5
    • C. 2, 4
    • D. 1, 3
      • Discuss
    • 2. Which of the following statements is correct about the C#.NET code snippet given below? 

      struct Book
{
    private String name; 
    private int noofpages; 
    private Single price;
}
Book b = new Book();

    • Options
    • A. The structure variable b will be created on the heap.
    • B. We can add a zero-argument constructor to the above structure.
    • C. When the program terminates, variable b will get garbage collected.
    • D. The structure variable b will be created on the stack.
    • E. We can inherit a new structure from struct Book.
      • Discuss
    • 3. Which of the following statements is correct about the C#.NET code snippet given below? 

      class Trial
{ 
    int i;
    Decimal d;
}
struct Sample
{
    private int x;
    private Single y;
    private Trial z;
}
Sample ss = new Sample();

    • Options
    • A. ss will be created on the heap.
    • B. Trial object referred by z will be created on the stack.
    • C. z will be created on the heap.
    • D. Both ss and z will be created on the heap.
    • E. ss will be created on the stack.
      • Discuss
    • 4. The space required for structure variables is allocated on stack.

    • Options
    • A. True
    • B. False
      • Discuss
    • 5. Which of the following will be the correct output for the C#.NET program given below? 

      namespace CuriousTabConsoleApplication
{ 
    struct Sample
    { 
        public int i;
    }
    class MyProgram
    { 
        static void Main(string[] args)
        {
            Sample x = new Sample(); 
            x.i = 10; 
            fun(ref x); 
            Console.Write(x.i + " ");
        }
        public static void fun(ref Sample y)
        { 
            y.i = 20;
            Console.Write(y.i + " "); 
        } 
    } 
}

    • Options
    • A. 20 10
    • B. 10 20
    • C. 10 10
    • D. 20 20
    • E. None of the above
      • Discuss
    • 6. Which of the following is the correct way to implement a read only property Length in a Sample class?

    • Options
    • A. 
      class Sample
{
    int len;
    public int Length
    {
        get
        {
            return len;
        } 
    } 
}
    • B. 
      class Sample
{
    public int Length
    {
        get
        {
            return Length;
        } 
    } 
}
    • C. 
      class Sample
{
    int len;
    public int Length
    {
        get
        {
            return len;
        } 
        set
        {
            len = value;
        } 
    } 
}
    • D. 
      class Sample
{
    int len;
    public int Length
    {
        Readonly get
        {
            return len;
        } 
    } 
}
      • Discuss
    • 7. Which of the following is the correct way to implement a write only property Length in a Sample class?

    • Options
    • A. 
      class Sample
{
    public int Length
    {
        set
        {
            Length = value;
        } 
    } 
}
    • B. 
      class Sample
{
    int len;
    public int Length
    {
        get
        {
            return len;
        }
        set
        {
            len = value;
        } 
    } 
}
    • C. 
      class Sample
{
    int len;
    public int Length
    {
        WriteOnly set
        {
            len = value;
        } 
    } 
}
    • D. 
      class Sample
{
    int len;
    public int Length
    {
        set
        {
            len = value;
        }
    } 
}
      • Discuss
    • 8. If a Student class has an indexed property which is used to store or retrieve values to/from an array of 5 integers, then which of the following are the correct ways to use this indexed property? 

      1. Student[3] = 34;
      2. Student s = new Student(); 
s[3] = 34;
      3. Student s = new Student(); 
Console.WriteLine(s[3]);
      4. Console.WriteLine(Student[3]);
      5. Student.this s = new Student.this(); 
s[3] = 34;

    • Options
    • A. 1, 2
    • B. 2, 3
    • C. 3, 4
    • D. 3, 5
      • Discuss
    • 9. If Sample class has a Length property with set accessor then which of the following statements will work correctly?

    • Options
    • A. 
      Sample m = new Sample(); 
int l;
l = m.Length;
    • B. 
      Sample m = new Sample(); 
m.Length = m.Length + 20;
    • C. 
      Sample.Length = 20;
    • D. 
      Console.WriteLine (Sample.Length);
    • E. 
      Sample m = new Sample(); 
m.Length = 10;
      • Discuss
    • 10. If a class Student has an indexer, then which of the following is the correct way to declare this indexer to make the C#.NET code snippet given below work successfully? 

      Student s = new Student(); 
s[1, 2] = 35;

    • Options
    • A. 
      class Student
{ 
    int[ ] a = new int[5, 5]; 
    public property WriteOnly int this[int i, int j]
    { 
        set
        { 
            a[i, j] = value;
        } 
    }
}
    • B. 
      class Student
{ 
    int[ , ] a = new int[5, 5]; 
    public int property WriteOnly
    { 
        set
        { 
            a[i, j] = value;
        } 
    } 
}
    • C. 
      class Student
{ 
    int[ , ] a = new int[5, 5];
    public int this[int i, int j] 
    {
        set
        { 
            a[i, j] = value;
        } 
    } 
}
    • D. 
      class Student
{ 
    int[ , ] a = new int[5, 5];
    int i, j; 
    public int this
    { 
        set
        { 
            a[i, j] = value;
        } 
    } 
}
      • Discuss

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