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C# Programming :: Datatypes

  1. Which of the following statements are correct about data types?

    1. If the integer literal exceeds the range of byte, a compilation error will occur.
    2. We cannot implicitly convert non-literal numeric types of larger storage size to byte.
    3. Byte cannot be implicitly converted to float.
    4. A char can be implicitly converted to only int data type.
    5. We can cast the integral character codes.

  2. A.
    1, 3, 5
    B.
    2, 4
    C.
    3, 5
    D.
    1, 2, 5

  3. Which of the following is an 8-byte Integer?

  4. A.
    Char
    B.
    Long
    C.
    Short
    D.
    Byte
    E.
    Integer

  5. Which of the following is NOT an Integer?

  6. A.
    Char
    B.
    Byte
    C.
    Integer
    D.
    Short
    E.
    Long

  7. Which of the following statements is correct?

  8. A.
    Information is never lost during narrowing conversions.
    B.
    The CInteger() function can be used to convert a Single to an Integer.
    C.
    Widening conversions take place automatically.
    D.
    Assigning an Integer to an Object type is known as Unboxing.
    E.
    3.14 can be treated as Decimal by using it in the form 3.14F.

  9. Which of the following are value types?

    1. Integer
    2. Array
    3. Single
    4. String
    5. Long

  10. A.
    1, 2, 5
    B.
    1, 3, 5
    C.
    2, 4
    D.
    3, 5

  11. Which of the following does not store a sign?

  12. A.
    Short
    B.
    Integer
    C.
    Long
    D.
    Byte
    E.
    Single

  13. What is the size of a Decimal?

  14. A.
    4 byte
    B.
    8 byte
    C.
    16 byte
    D.
    32 byte

  15. What will be the output of the following code snippet when it is executed?

        int x = 1;   
        float y = 1.1f; 
        short z = 1;    
        Console.WriteLine((float) x + y * z - (x += (short) y));
    
    

     

  16. A.

    0.1

    B.

    1.0

    C.

    1.1

    D.

    11


  17.  

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

     short s1 = 20;
     short s2 = 400;
     int a; 
     a = s1 * s2;

     

  18. A.

    A value 8000 will be assigned to a.

    B.

    A negative value will be assigned to a.

    C.

    During arithmetic if the result exceeds the high or low value of the range the value wraps around till the other side of the range.

    D.

    An error is reported as widening conversion cannot takes place.

    E.

    An overflow error will be reported since the result of the multiplication exceeds the range of a Short Integer.


  19. Which of the following is the correct size of a Decimal datatype?

  20. A.
    8 Bytes
    B.
    4 Bytes
    C.
    10 Bytes
    D.
    16 Bytes
    E.
    None of the above.