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  • Question
  • Which of the following statements are correct about datatypes in C#.NET?

    1. Every datatype is either a value type or a reference type.
    2. Value types are always created on the heap.
    3. Reference types are always created on the stack.
    4. Mapping of every value type to a type in Common Type System facilitates Interoperability in C#.NET.
    5. Every reference type gets mapped to a type in Common Type System.


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

  • Correct Answer
  • 1, 4 


  • Datatypes problems


    Search Results


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

    • Options
    • A. 8 Bytes
    • B. 4 Bytes
    • C. 10 Bytes
    • D. 16 Bytes
    • E. None of the above.
    • Discuss
    • 2. Which of the following statement correctly assigns a value 33 to a variable c?

      byte a = 11, b = 22, c;


    • Options
    • A. c = (byte) (a + b);
    • B. c = (byte) a + (byte) b;
    • C. c = (int) a + (int) b;
    • D. c = (int)(a + b);
    • E. c = a + b;
    • Discuss
    • 3. Which of the following does not store a sign?

    • Options
    • A. Short
    • B. Integer
    • C. Long
    • D. Byte
    • E. Single
    • Discuss
    • 4. Which of the following statements are correct about data types?

      1. Each value type has an implicit default constructor that initializes the default value of that type.
      2. It is possible for a value type to contain the null value.
      3. All value types are derived implicitly from System.ValueType class.
      4. It is not essential that local variables in C# must be initialized before being used.
      5. Variables of reference types referred to as objects and store references to the actual data.

    • Options
    • A. 1, 3, 5
    • B. 2, 4
    • C. 3, 5
    • D. 2, 3, 4
    • Discuss
    • 5. Which of the following is an 8-byte Integer?

    • Options
    • A. Char
    • B. Long
    • C. Short
    • D. Byte
    • E. Integer
    • Discuss
    • 6. What will be the output of the C#.NET code snippet given below?

      int i, j = 1, k;
      for (i = 0; i < 5; i++)
      {
          k = j++ + ++j;
          Console.Write(k + " ");
      }

    • Options
    • A. 8 4 16 12 20
    • B. 4 8 12 16 20
    • C. 4 8 16 32 64
    • D. 2 4 6 8 10
    • Discuss
    • 7. Which of the following is NOT an Arithmetic operator in C#.NET?

    • Options
    • A. **
    • B. +
    • C. /
    • D. %
    • E. *
    • Discuss
    • 8. What will be the output of the C#.NET code snippet given below?

      int a = 10, b = 20, c = 30; 
      int res = a < b? a < c? c : a : b; 
      Console.WriteLine(res);

    • Options
    • A. 10
    • B. 20
    • C. 30
    • D. Compile Error / Syntax Error
    • Discuss
    • 9. Which of the following statements are correct?

      1. The conditional operator (?:) returns one of two values depending on the value of a Boolean expression.
      2. The as operator in C#.NET is used to perform conversions between compatible reference types.
      3. The &* operator is also used to declare pointer types and to dereference pointers.
      4. The -> operator combines pointer dereferencing and member access.
      5. In addition to being used to specify the order of operations in an expression, brackets [ ] are used to specify casts or type conversions.

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

      Console.WriteLine(13 / 2 + " " + 13 % 2); 

    • Options
    • A. 6.5 1
    • B. 6.5 0
    • C. 6 0
    • D. 6 1
    • E. 6.5 6.5
    • Discuss


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