Question

Choose the statement which defines the Nullable type Correctly:

(a) A special version of a value type that is represented by a structure

(b) A nullable type can also store the value null

(c) Nullable types are objects of System.Nullable, where T must be a non nullable value type

(d) All of the mentioned

The question was posed to me in an interview.

The above asked question is from Pointers Operation in chapter Miscellaneous topics of C#

Answer 1

The correct answer is (d) All of the mentioned

The explanation: A nullable type is a special version of the value type that is represented by a structure. In addition to the values defined by the underlying type, a nullable type can also store the value null. Thus, a nullable type has the same range and characteristics as its underlying type. It simply adds the ability to represent a value which indicates that a variable of that type is unassigned. Nullable types are objects of System.Nullable<T>, where T must be a nonnullable value type.