C# DataType MCQs

Question 11: What will be the output of the following program?

public static void Main(string[] args)
{
    var x = "5";
    Console.Write(x.GetType());
}

Answer: B

The GetType() method returns the fully qualified type name System.String.

Question 12: __________ is the process of converting a value type to the reference type.

Answer: A

Boxing refers to converting the value types to the reference types, and unboxing refers to converting the reference types to value types. Learn boxing and unboxing in C#.

Question 13: The following is an example of ________.

object val = 123;
int i = (int)val;

Answer: B

Boxing refers to converting the value types to the reference types, and unboxing refers to converting the reference types to value types. Learn boxing and unboxing in C#.

Question 14:  Which of the following symbol is used to display a string without using escape characters inside a string?

Answer: B

Use backslash \ before double quotes and some special characters such as \,\n,\r,\t, etc., to include it in a string. However, it will be very tedious to prefix \ for every special character. Prefixing the string with an @ indicates that it should be treated as a literal and should not escape any character, e.g. @"xyzdef\rabc".

Question 15: Which of the following data type does not store a sign?

Answer: D

The byte data type does not store a sign + or -. Learn C# datatypes.