C# - Datatypes Questions and Answers

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Q1
Which of the following statements are correct about data types?     If the integer literal exceeds the range of byte, a compilation error will occur.     We cannot implicitly convert non-literal numeric types of larger storage size to byte.     Byte cannot be implicitly converted to float.     A char can be implicitly converted to only int data type.     We can cast the integral character codes.
  • A 1, 3, 5
  • B 2, 4
  • C 3, 5
  • D 1, 2, 5
Answer: Option D
Q2
Which of the following is an 8-byte Integer?
  • A Char
  • B Long
  • C Short
  • D Byte
Answer: Option B
Q3
 Which of the following is NOT an Integer?
  • A Char
  • B Byte
  • C Integer
  • D Short
Answer: Option A
Q4
Which of the following statements is correct?
  • 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.
Answer: Option C
Q5
Which of the following are value types?     Integer     Array     Single     String     Long
  • A 1, 2, 5
  • B 1, 3, 5
  • C 2, 4
  • D 3, 5
Answer: Option B
Q6
Which of the following does not store a sign?
  • A Short
  • B Integer
  • C Long
  • D Byte
Answer: Option D
Q7
What is the size of a Decimal?
  • A 4 byte
  • B 8 byte
  • C 16 byte
  • D 32 byte
Answer: Option C
Q8
What will be the output of the following code snippet when it is executed?     int x = 1;     floaty = 1.1f;     short z = 1;     Console.Write.Line((float) x + y * z - (x += (short) y));
  • A 0.1
  • B 1.0
  • C 1.1
  • D 11
Answer: Option A
Q9
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;
  • 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.
Answer: Option A
Q10
Which of the following is the correct size of a Decimal datatype?
  • A 8 Bytes
  • B 4 Bytes
  • C 10 Bytes
  • D 16 Bytes
Answer: Option D

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