C# Class and Objects: Fundamentals Quiz

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Questions and Answers

What is the purpose of using auto-implemented properties in C#?

  • To eliminate the need for declaring underlying private fields (correct)
  • To allow additional logic in the getter and setter methods
  • To speed up the development time and code readability
  • To create a special type of method that is called automatically

What does a constructor do in C#?

  • Executes one or more statements as a single unit
  • Is called automatically when an instance of a class is created (correct)
  • Creates multiple objects of a class with different values
  • Returns the sum of two numbers

How are objects of a class created in C#?

  • By calling the get and set methods
  • By applying additional logic in the getter and setter methods
  • By using the new keyword and assigning the object to a variable of the class type (correct)
  • By using the auto-implemented property keyword

What is the primary purpose of a method in C#?

<p>To return a value and have input parameters (C)</p> Signup and view all the answers

What is the benefit of using get and set methods for properties in C#?

<p>It applies additional logic to read and write property values (C)</p> Signup and view all the answers

What is the purpose of a class in C#?

<p>To define the kinds of data and functionality their objects will have (B)</p> Signup and view all the answers

In object-oriented programming, what does a class define?

<p>Properties and fields (C)</p> Signup and view all the answers

What is the purpose of a property in a class?

<p>To encapsulate private fields using setter and getter to assign and retrieve underlying field value (A)</p> Signup and view all the answers

What is a field in a class?

<p>A class-level variable that holds a value (C)</p> Signup and view all the answers

How can a class and its members be restricted from other parts of the program?

<p>By using access modifiers such as public, private, protected, and internal (D)</p> Signup and view all the answers

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Study Notes

Properties and Accessories

  • Auto-implemented properties in C# allow for a concise syntax to define properties with a private field and public getter and setter.
  • Using get and set methods for properties in C# provides data encapsulation and abstraction.

Constructors

  • A constructor in C# is a special method that is invoked when an object of a class is created.
  • Constructors are used to initialize objects with initial values.

Class and Object Creation

  • Objects of a class are created in C# using the new keyword.
  • The new keyword allocates memory for the object and initializes it using a constructor.

Methods

  • The primary purpose of a method in C# is to perform a specific task or set of tasks.
  • Methods can take arguments, return values, and modify object state.

Classes and Objects

  • A class in C# defines a blueprint or template for creating objects.
  • A class defines properties, methods, and events that describe and define an object's behavior.

Object-Oriented Programming

  • In object-oriented programming, a class defines a type that specifies properties and behavior of an object.

Properties and Fields

  • A property in a class is a member that provides a flexible mechanism to read, write, or compute the value of a private field.
  • A field in a class is a variable that is a member of a class or struct.

Access Control

  • A class and its members can be restricted from other parts of the program using access modifiers such as public, private, protected, and internal.

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