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Home ‣ C# Programming ‣ Operators See What Others Are Saying!
  • Question

  • Suppose n is a variable of the type Byte and we wish, to check whether its fourth bit (from right) is ON or OFF. Which of the following statements will do this correctly?


  • Options
  • A. 
    if ((n&16) == 16)
Console.WriteLine("Fourth bit is ON");
  • B. 
    if ((n&8) == 8)
Console.WriteLine("Fourth bit is ON");
  • C. 
    if ((n ! 8) == 8)
Console.WriteLine("Fourth bit is ON");
  • D. 
    if ((n ^ 8) == 8)
Console.WriteLine("Fourth bit is ON");
  • E. 
    if ((n ~ 8) == 8)
Console. WriteLine("Fourth bit is ON");

  • Correct Answer 
  • if ((n&8) == 8)
Console.WriteLine("Fourth bit is ON");
     

    Explanation 
    byte myByte = 153; // In Binary = 10011001

byte n = 8; // In Binary = 00001000 
(Here 1 is the 4th bit from right)

Now perform logical AND operation (n & myByte)

 10011001
 00001000
---------
 00001000  Here result is other than 0, so evaluated to True.
---------
    If the result is true, then we can understand that 4th bit is ON of the given data myByte.

    More questions

    • 1. There is no private or protected inheritance in C#.NET.

    • Options
    • A. True
    • B. False
      • Discuss
    • 2. Which of the following is NOT an Arithmetic operator in C#.NET?

    • Options
    • A. **
    • B. +
    • C. /
    • D. %
    • E. *
      • Discuss
    • 3. The space required for structure variables is allocated on stack.

    • Options
    • A. True
    • B. False
      • Discuss
    • 4. Is it possible to invoke Garbage Collector explicitly?

    • Options
    • A. Yes
    • B. No
      • Discuss
    • 5. It possible to create a custom attribute that can be applied only to specific programming element(s) like ____ .

    • Options
    • A. Classes
    • B. Methods
    • C. Classes and Methods
    • D. Classes, Methods and Member-Variables
      • Discuss
    • 6. C#.NET structures are always value types.

    • Options
    • A. True
    • B. False
      • Discuss
    • 7. What does the following C#.NET code snippet will print? 

      int i = 0, j = 0; 

label:
    i++;
    j+=i;
if (i < 10)
{
    Console.Write(i +" ");
    goto label; 
}

    • Options
    • A. Prints 1 to 9
    • B. Prints 0 to 8
    • C. Prints 2 to 8
    • D. Prints 2 to 9
    • E. Compile error at label:.
      • Discuss
    • 8. The [Serializable()] attribute gets inspected at

    • Options
    • A. Compile-time
    • B. Run-time
    • C. Design-time
    • D. Linking-time
    • E. None of the above
      • Discuss
    • 9. Code that targets the Common Language Runtime is known as

    • Options
    • A. Unmanaged
    • B. Distributed
    • C. Legacy
    • D. Managed Code
    • E. Native Code
      • Discuss
    • 10. Which of the following are the correct ways to declare a delegate for calling the function func() defined in the sample class given below? 

      class Sample
{
    public int func(int i, Single j)
    {
        /* Add code here. */
    }
}

    • Options
    • A. delegate d(int i, Single j);
    • B. delegate void d(int, Single);
    • C. delegate int d(int i, Single j);
    • D. delegate void (int i, Single j);
    • E. delegate int sample.func(int i, Single j);
      • Discuss

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