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  • Question
  • Which of the following are the correct way to initialise the variables i and j to a value 10 each?

    1. int i = 10; int j = 10;
    2. int i, j;
      i = 10 : j = 10;
    3. int i = 10, j = 10;
    4. int i, j = 10;
    5. int i = j = 10;


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

  • Correct Answer
  • 1, 3 


  • Datatypes problems


    Search Results


    • 1. Which of the following are value types?

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

    • Options
    • A. 1, 2, 5
    • B. 1, 3, 5
    • C. 2, 4
    • D. 3, 5
    • Discuss
    • 2. Which of the following is the correct default value of a Boolean type?

    • Options
    • A. 0 
    • B. 1
    • C. True
    • D. False
    • E. -1
    • Discuss
    • 3. For the code snippet given below, which of the following statements are valid?

      public class MyContainer<T> where T: class, IComparable
      {
          //Insert code here
      }
      1. Class MyContainer requires that it's type argument must implement IComparable interface.
      2. Compiler will report an error for this block of code.
      3. There are multiple constraints on type argument to MyContainer class.
      4. Class MyContainer requires that its type argument must be a reference type and it must implement IComparable interface.

    • Options
    • A. 1 and 2 Only
    • B. 3 and 4 Only
    • C. 2 and 3 Only
    • D. All of the above
    • E. None of the above
    • Discuss
    • 4. For the code snippet given below, which of the following statements are valid?

      public class MyContainer<T> where T: IComparabte
      {
          // Insert code here
      }
      1. Class MyContainer requires that it's type argument must implement IComparabte interface.
      2. Type argument of class MyContainer must be IComparabte.
      3. Compiler will report an error for this block of code.
      4. This requirement on type argument is called as constraint.

    • Options
    • A. 1 and 2 Only
    • B. 1, 2 and 3 Only
    • C. 1 and 4 Only
    • D. All of the above
    • E. None of the above
    • Discuss
    • 5. For the code snippet given below, which of the following statements is valid?

      public class Generic<T>
      {
          public T Field;
      }
      class Program
      {
          static void Main(string[ ] args)
          {
              Generic<String> g = new Generic<String>();
              g.Field = "Hello";
              Console.WriteLine(g.Field);
          }
      }

    • Options
    • A. It will print string "Hello" on the console.
    • B. Name Generic cannot be used as a class name because it's a keyword.
    • C. Compiler will give an error.
    • D. Member Field of class Generic is not accessible directly.
    • E. None of the above.
    • Discuss
    • 6. 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));

    • Options
    • A. 0.1
    • B. 1.0
    • C. 1.1
    • D. 11
    • Discuss
    • 7. Which of the following is the correct ways to set a value 3.14 in a variable pi such that it cannot be modified?

    • Options
    • A. float pi = 3.14F;
    • B. #define pi 3.14F;
    • C. const float pi = 3.14F;
    • D. const float pi; pi = 3.14F;
    • E. pi = 3.14F;
    • Discuss
    • 8. 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;


    • Options
    • 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.
    • Discuss
    • 9. Which of the following is NOT an Integer?

    • Options
    • A. Char
    • B. Byte
    • C. Integer
    • D. Short
    • E. Long
    • Discuss
    • 10. 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.

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


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