Advanced C# Features Quiz

What is the purpose of an indexer in C#?

• To sort arrays

• To access elements in a class using array-like syntax

• To create loops

• To define multiple constructors

Which keyword is used to define an indexer in a class?

• index

• getset

• this

• setget

What is operator overloading used for?

• Changing the memory allocation

• Redefining how operators work for custom types

• Adding new methods to an object

• Creating anonymous types

Which operator is being overloaded in this method: public static Point operator +(Point a, Point b)?

• -

• *

• /

• +

What type of structure is a 'struct' in C# considered?

• Class

• Method

• Custom Value Type

• Interface

Which one of the following is a correct example of defining a struct in C#?

• structure Book { }

• class Book { }

• struct Book { }

• public Book() { }

What are extension methods?

• Methods that extend runtime memory

• Methods added to existing types without modifying their source

• Methods inside interfaces

• Generic methods

Extension methods must be declared in which type of class?

• Sealed class

• Partial class

• Static class

• Abstract class

Which keyword must be used to allow pointer operations in C#?

• fixed

• unsafe

• pointer

• raw

Anonymous types are usually used when...

• You want to use pointers

• You need temporary read-only objects without a class

• You want to use operator overloading

• You are using extension methods