Do You Know Everything About Objective-c?

Reviewed by Editorial Team
The ProProfs editorial team is comprised of experienced subject matter experts. They've collectively created over 10,000 quizzes and lessons, serving over 100 million users. Our team includes in-house content moderators and subject matter experts, as well as a global network of rigorously trained contributors. All adhere to our comprehensive editorial guidelines, ensuring the delivery of high-quality content.
Learn about Our Editorial Process
| By K_Enidaa
K
K_Enidaa
Community Contributor
Quizzes Created: 15 | Total Attempts: 4,992
| Attempts: 125
SettingsSettings
Please wait...
  • 1/10 Questions

    What's the filename extension for implementation program files? 

    • .m
    • .o
    • .e
    • .a
Please wait...
About This Quiz

Back then in the 1980s, Objective-C was Apple's pride and joy. Times have changed, but the significance of Objective-C hasn't faded. Today, we're testing your knowledge on this general-purpose, object-oriented programming. Let's see are you an Objective-C expert!

Do You Know Everything About Objective-c? - Quiz

Quiz Preview

  • 2. 
    Where does Objective-C derive its object syntax from? - ProProfs

    Where does Objective-C derive its object syntax from?

    • Smalltalk

    • Smallwatch

    • Smallpage

    • Smalltab

    Correct Answer
    A. Smalltalk
    Explanation
    Objective-C derives its object syntax from Smalltalk. Smalltalk is an object-oriented programming language that was developed in the 1970s. Objective-C, which was created in the 1980s, borrowed many of its object-oriented features and syntax from Smalltalk. This includes concepts such as message passing, dynamic typing, and the use of square brackets for method calls. By incorporating Smalltalk's object syntax, Objective-C was able to provide a powerful and flexible programming language for developing software applications.

    Rate this question:

  • 3. 
    What's Objective-C model of object-oriented programming based on? - ProProfs

    What's Objective-C model of object-oriented programming based on?

    • Message deleting during testing

    • Message passing to object instances

    • Message creating to object instances

    • Message modifying during testing

    Correct Answer
    A. Message passing to object instances
    Explanation
    Objective-C model of object-oriented programming is based on message passing to object instances. In Objective-C, objects communicate with each other by sending messages. When a message is sent to an object, the object's method corresponding to that message is executed. This allows objects to interact and collaborate with each other, forming the basis of object-oriented programming in Objective-C.

    Rate this question:

  • 4. 
    Which protocols does Objective-C use? - ProProfs

    Which protocols does Objective-C use?

    • New and old protocols

    • Regular and strange protocols

    • Informal and formal protocols

    • Slow and fast protocols

    Correct Answer
    A. Informal and formal protocols
    Explanation
    Objective-C uses both informal and formal protocols. Informal protocols are a way to define a set of methods that objects can choose to implement, providing a flexible way to extend functionality. Formal protocols, on the other hand, are a more structured approach where a set of methods must be implemented by conforming objects. By supporting both types of protocols, Objective-C allows developers to choose the level of flexibility and structure they need in their code.

    Rate this question:

  • 5. 
    What's "Objective-C without the C"?  - ProProfs

    What's "Objective-C without the C"? 

    • Saw

    • Swing

    • Swirl

    • Swift

    Correct Answer
    A. Swift
    Explanation
    Swift is the correct answer because it is known as "Objective-C without the C." Swift is a programming language developed by Apple that is designed to be more modern, safe, and easier to use than Objective-C. It is compatible with Objective-C and can be used alongside it in iOS and macOS development. Swift eliminates the need for many of the complex and error-prone features of Objective-C, making it a more streamlined and efficient language for developing applications.

    Rate this question:

  • 6. 
    What does syntax allow?  - ProProfs

    What does syntax allow? 

    • Writing the test in any language you want

    • Changing the code

    • Pseudo-naming of arguments

    • Changing the syntax's color

    Correct Answer
    A. Pseudo-naming of arguments
    Explanation
    Syntax allows for the pseudo-naming of arguments. This means that when writing code, you can use descriptive names for the arguments instead of the actual variable names. This can make the code more readable and easier to understand for both the programmer and other individuals who may need to work with the code. Pseudo-naming of arguments is a feature provided by the syntax of programming languages.

    Rate this question:

  • 7. 
    Which statement is true? - ProProfs

    Which statement is true?

    • You need to know a specific language to read Objective-C's messages

    • Objective-C sends only encrypted messages

    • Objective-C isn't capable of sending messages

    • Objective-C can send messages to an object that may not respond

    Correct Answer
    A. Objective-C can send messages to an object that may not respond
    Explanation
    Objective-C can send messages to an object that may not respond. This means that Objective-C allows for the sending of messages to an object without requiring the object to have a defined response or method implementation. This flexibility allows for dynamic messaging and handling of potential errors or unexpected scenarios in Objective-C programming.

    Rate this question:

  • 8. 
    What was Objective-C for Apple back in the 1980s?  - ProProfs

    What was Objective-C for Apple back in the 1980s? 

    • A language that wasn't used at all

    • A language that was stolen from Apple's opponent

    • Apple's second created language

    • Apple's main programming language

    Correct Answer
    A. Apple's main programming language
    Explanation
    Objective-C was Apple's main programming language in the 1980s. It was not a language that wasn't used at all or stolen from Apple's opponent. It was also not Apple's second created language. Objective-C was widely used by Apple for developing software and applications during that time period.

    Rate this question:

  • 9. 
    What do you use to write methods?  - ProProfs

    What do you use to write methods? 

    • Parts of codes

    • Numbers and symbols

    • A specific language written for the specific test

    • Interface declarations

    Correct Answer
    A. Interface declarations
    Explanation
    Interface declarations are used to define methods in programming. An interface is a collection of abstract methods that can be implemented by classes. By using interface declarations, programmers can define the methods that need to be implemented by a class, without specifying how they should be implemented. This allows for code reusability and ensures that classes implementing the interface have the required methods. Therefore, interface declarations are the correct choice for writing methods.

    Rate this question:

  • 10. 
    What is posing? - ProProfs

    What is posing?

    • Permitting a class to replace another class withing a program

    • Replacing a platform on which you perform the testing

    • Allowing access to hidden files

    • Recording and playing testing process

    Correct Answer
    A. Permitting a class to replace another class withing a program
    Explanation
    Posing refers to the act of allowing a class to replace another class within a program. This means that one class can take on the functionality and behavior of another class, providing flexibility and customization options within the program. This concept is often used in object-oriented programming to facilitate easier modifications and updates to the program's code.

    Rate this question:

Quiz Review Timeline (Updated): Mar 18, 2023 +

Our quizzes are rigorously reviewed, monitored and continuously updated by our expert board to maintain accuracy, relevance, and timeliness.

  • Current Version
  • Mar 18, 2023
    Quiz Edited by
    ProProfs Editorial Team
  • May 06, 2018
    Quiz Created by
    K_Enidaa
Back to Top Back to top
Advertisement
×

Wait!
Here's an interesting quiz for you.

We have other quizzes matching your interest.