Object-Oriented Programming: Classes and Objects

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What is the main purpose of a class in object-oriented programming?

To declare variables and methods directly

To define attributes and methods of an object

To serve as a template for objects (correct)

To create an instance of an object

What do individual objects inherit from a class when they are created?

Only methods

Only variables

All variables and methods (correct)

None of the above

What is the term used to describe a variable declared directly in a class?

Method

Field (correct)

Attribute

Property

Why is it a good practice to start with an uppercase first letter when naming classes?

It is a good practice, but not required Signup and view all the answers

What is an example of an object in real life?

A car object Signup and view all the answers

What is the keyword used to create a class in C#?

class Signup and view all the answers

What is the name of the variable that holds the value 'red' in the class Car?

color Signup and view all the answers

What is the purpose of creating an object of a class?

To access the fields of the class Signup and view all the answers

What is the syntax to access the fields of a class?

Using the dot syntax (.) Signup and view all the answers

What happens when you leave the fields blank and modify them when creating the object?

You can modify them later when creating the object Signup and view all the answers

What is the benefit of creating multiple objects of one class?

It allows you to create multiple objects with different values Signup and view all the answers

What is the output of the following code: Console.WriteLine(myObj.color);?

The output will be the value of the color field Signup and view all the answers

What is the purpose of access modifiers in classes?

To control the visibility of class members Signup and view all the answers

What happens if you try to access a private field outside the class?

An error will occur Signup and view all the answers

What is the main advantage of declaring fields as private?

It helps to achieve encapsulation Signup and view all the answers

What is the default access level of a field if no access modifier is specified?

Private Signup and view all the answers

Which access modifier makes a field accessible to all classes?

Public Signup and view all the answers

What is the purpose of encapsulation in object-oriented programming?

To hide sensitive data from users Signup and view all the answers

What is the primary reason for using inheritance in programming?

To reduce code duplication and increase reusability Signup and view all the answers

What is the process of representing essential features without including background details?

Abstraction Signup and view all the answers

What is an abstract class in C#?

A restricted class that cannot be used to create objects Signup and view all the answers

Why is abstraction important in programming?

To hide implementation details from the user Signup and view all the answers

What is an example of abstraction in real life?

Logging in to a social networking site Signup and view all the answers

What is the keyword used to declare an abstract class or method in C#?

abstract Signup and view all the answers

What is the purpose of a constructor in a class?

To set initial values for fields Signup and view all the answers

What happens if you do not create a class constructor yourself?

You will not be able to set initial values for fields Signup and view all the answers

What is the name of the constructor in the following code: `class Car { public string model; public Car (string modelName) { model = modelName; } }`

Car Signup and view all the answers

How many parameters can a constructor have?

As many as you want Signup and view all the answers

What is the purpose of the `Main` method in the following code?

To start the program execution Signup and view all the answers

What is the output of the following code: `class Car { public string model; public Car (string modelName) { model = modelName; } static void Main(string[] args) { Car Ford = new Car("Mustang"); Console.WriteLine(Ford.model); } }`

Mustang Signup and view all the answers

Object-Oriented Programming: Classes and Objects

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Questions and Answers

What is the main purpose of a class in object-oriented programming?

What do individual objects inherit from a class when they are created?

What is the term used to describe a variable declared directly in a class?

Why is it a good practice to start with an uppercase first letter when naming classes?

What is an example of an object in real life?

What is the keyword used to create a class in C#?

What is the name of the variable that holds the value 'red' in the class Car?

What is the purpose of creating an object of a class?

What is the syntax to access the fields of a class?

What happens when you leave the fields blank and modify them when creating the object?

What is the benefit of creating multiple objects of one class?

What is the output of the following code: Console.WriteLine(myObj.color);?

What is the purpose of access modifiers in classes?

What happens if you try to access a private field outside the class?

What is the main advantage of declaring fields as private?

What is the default access level of a field if no access modifier is specified?

Which access modifier makes a field accessible to all classes?

What is the purpose of encapsulation in object-oriented programming?

What is the primary reason for using inheritance in programming?

What is the process of representing essential features without including background details?

What is an abstract class in C#?

Why is abstraction important in programming?

What is an example of abstraction in real life?

What is the keyword used to declare an abstract class or method in C#?

What is the purpose of a constructor in a class?

What happens if you do not create a class constructor yourself?

What is the name of the constructor in the following code: `class Car { public string model; public Car (string modelName) { model = modelName; } }`

How many parameters can a constructor have?

What is the purpose of the `Main` method in the following code?

What is the output of the following code: `class Car { public string model; public Car (string modelName) { model = modelName; } static void Main(string[] args) { Car Ford = new Car("Mustang"); Console.WriteLine(Ford.model); } }`

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CSC 4101: Object-Oriented Programming Chapters 11 & 12

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Object-Oriented Programming Concepts

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Object-Oriented Programming: Classes and Objects

Choose a study mode

Podcast

Questions and Answers

What is the main purpose of a class in object-oriented programming?

What do individual objects inherit from a class when they are created?

What is the term used to describe a variable declared directly in a class?

Why is it a good practice to start with an uppercase first letter when naming classes?

What is an example of an object in real life?

What is the keyword used to create a class in C#?

What is the name of the variable that holds the value 'red' in the class Car?

What is the purpose of creating an object of a class?

What is the syntax to access the fields of a class?

What happens when you leave the fields blank and modify them when creating the object?

What is the benefit of creating multiple objects of one class?

What is the output of the following code: Console.WriteLine(myObj.color);?

What is the purpose of access modifiers in classes?

What happens if you try to access a private field outside the class?

What is the main advantage of declaring fields as private?

What is the default access level of a field if no access modifier is specified?

Which access modifier makes a field accessible to all classes?

What is the purpose of encapsulation in object-oriented programming?

What is the primary reason for using inheritance in programming?

What is the process of representing essential features without including background details?

What is an abstract class in C#?

Why is abstraction important in programming?

What is an example of abstraction in real life?

What is the keyword used to declare an abstract class or method in C#?

What is the purpose of a constructor in a class?

What happens if you do not create a class constructor yourself?

What is the name of the constructor in the following code: class Car { public string model; public Car (string modelName) { model = modelName; } }

How many parameters can a constructor have?

What is the purpose of the Main method in the following code?

What is the output of the following code: class Car { public string model; public Car (string modelName) { model = modelName; } static void Main(string[] args) { Car Ford = new Car("Mustang"); Console.WriteLine(Ford.model); } }

More Like This

Applications of Object-Oriented Programming (OOP) in Computer Science

CSC 4101: Object-Oriented Programming Chapters 11 & 12

Object Oriented Programming Concepts

Object-Oriented Programming Concepts

What is the name of the constructor in the following code: `class Car { public string model; public Car (string modelName) { model = modelName; } }`

What is the purpose of the `Main` method in the following code?

What is the output of the following code: `class Car { public string model; public Car (string modelName) { model = modelName; } static void Main(string[] args) { Car Ford = new Car("Mustang"); Console.WriteLine(Ford.model); } }`