Top 25 Advanced C++ MCQs for Experienced Programmers

 

Do you know that the browser you are reading this article on might be a product of C++ programming? Well, the all-in-one education to entertainment mobile application, YouTube, also runs on advanced C++. 

The number of advantages of this versatile language is never-ending. It is a coding language that is both highly-level and object-oriented. This feature of C++ makes it easier for developers to design and develop code that is not complicated, more efficient, and better suited for creating large applications.

If you are a programmer or an aspiring one, you must be proficient in advanced C++. This expertise will help you crack the C++ MCQs and C++ interview questions for the FAANG+ companies easily. 

In this article, we will explain what is advanced C++ and its key features. We also present some commonly asked advanced C++ MCQs for experienced programmers.

Understanding Advanced C++ 

C++ is a widely used programming language in the technology domain today. It encompasses various features, and the interface is easy to use, providing a user-friendly programming environment. Being an object-oriented language, C++ offers a clear structure to programs, which results in lower development costs.

Features of Advanced C++

The following are some of the key features of this programming language. You should keep these in mind, as it is a commonly asked advanced C++ MCQ for experienced programmers. 

• Rich and extensive library

• Object-oriented Programming

• Simple and User-Friendly Interface

• Acts as a Mid-Level Programming Languages

25 Advanced C++ MCQs for Experienced Programmers

With the increased popularity of advanced C++, it becomes necessary to update your understanding of the latest technologies and updates. With the help of these OOP MCQs and C++ interview questions, you can get an idea of your preparation level for career growth.

Q1. What is the Output of the Following Code Snippet?

1. The memory address of the pointer variable  

2. The value of x  

3. The memory address of x  

4. Error: Cannot output a pointer directly  

Answer: The correct answer to this advanced C++ MCQ for experienced programmers is ‘c’ – The memory address of x

Q2. Which of the Following Best Describes a Lambda Expression in C++?

1. A lightweight function object that can be defined inline  

2. A pointer to a function  

3. A preprocessor macro  

4. An anonymous function  

Answer: The correct answer to this advanced C++ MCQ for experienced programmers is ‘a’ – A lightweight function object that can be defined inline

Q3. What Does the Explicit Keyword do in C++?

1. Specifies that a function cannot be overridden  

2. Specifies that a constructor cannot be called implicitly  

3. Specifies that a function should be inlined  

4. Specifies that a variable cannot be modified  

Answer: b. Specifies that a constructor cannot be called implicitly

Q4. What is a Smart Pointer in C++?

1. A variable pointer that is auto-incrementing itself.

2. A pointer that deallocates the allocated memory once it is no longer required.

3. A pointer that is auto-undefined and points to nullptr.

4. A pointer that can’t be dereferenced

Answer: b. A pointer that deallocates the allocated memory once it is no longer required.

Q5. What is the Utility of the static_assert Leyword in C++ Programming?

1. To assert that the pointer is not null.

2. To assert that a function is pure virtual

3. To assert that a condition is true at compile time

4. To assert the condition at runtime

Answer: c. To assert that a condition is true at compile time 

Q6. What is the Output of the Given Code Snippet? 

1. 5 4 3 2 1  

2. 1 2 3 4 5  

3. Error: cannot iterate over a reversed vector  

4. Error: cannot dereference a reverse iterator  

Answer: a. 5 4 3 2 1

Q7. What Does the Volatile Keyword do in C++?

1. Specifies that a variable cannot be modified  

2. Specifies that a variable can be modified by external sources  

3. Specifies that a variable is thread-local  

4. Specifies that a variable cannot be optimized by the compiler  

Answer: b. Specifies that a variable can be modified by external sources

Q8. What is the Purpose of the `std::move` Function in C++?

1. Moves the contents of one container to another  

2. Moves the ownership of a resource from one object to another  

3. Moves the iterator to the next element in a container  

4. Moves the cursor position in a file  

Answer: b. Moves the ownership of a resource from one object to another

Q9. What is a Template in C++?

1. A preprocessor macro  

2. A function that can have a variable number of arguments  

3. A generic function or class that can operate on any data type  

4. A type of pointer  

Answer: The correct answer to this advanced C++ MCQ for experienced programmers is ‘c’ – A generic function or class that can operate on any data type

Q10. What is the Output of the Following Code?

1. Base  

2. Derived  

3. Error: cannot cast from base to derived class  

4. Pointer is nullptr  

Answer: The correct answer to this advanced C++ MCQ for experienced programmers is ‘d’ – Pointer is nullptr

Q11. Give the Output of the Following Code Snippet.

1. 1  

2. 2  

3. 3  

4. Error: cannot add pointer and integer  

Answer: The correct answer to this advanced C++ MCQ for experienced programmers is ‘c’ – 3.

Q12. What is a Lambda Capture in C++?

1. A mechanism to capture runtime errors  

2. A way to capture variables from the enclosing scope in a lambda expression  

3. A method of capturing screenshots in a GUI application  

4. A technique to capture user input  

Answer: b. A way to capture variables from the enclosing scope in a lambda expression

Q13. What is the Purpose of the std::forward Function in C++?

1. Forwards arguments to another function without moving them  

2. Moves arguments to another function  

3. Copies arguments to another function  

4. Check if arguments are valid  

Answer: a. Forwards arguments to another function without moving them

Q14. What is the Output of the Following Code Snippet?

1. 5  

2. 10  

3. Error: cannot assign to a reference  

4. Error: cannot dereference a pointer  

Answer: The correct answer to this advanced C++ MCQ for experienced programmers is ‘b’ – 10

Q15. What Output will be Returned for the Following Code?

1. 1  

2. 2  

3. 3  

4. 4 

Answer: The correct answer to this advanced C++ MCQ for experienced programmers is ‘d’ – 4

Q16. What is the Purpose of the std::async Function in C++?

1. Executes a function asynchronously and returns a future object representing the result

2. Executes a function synchronously and returns the result immediately

3. Executes a function asynchronously without returning a result

4. Executes a function synchronously and waits for user input

Answer: a. Executes a function asynchronously and returns a future object representing the result

Q17. What is a Variadic Template in C++?

1. A template with a fixed number of arguments

2. A template that can take a variable number of arguments

3. A template that cannot accept any arguments

4. A template that can only accept function pointers

Answer: b. A template that can take a variable number of arguments

Q18. What is the Purpose of the Mutable Keyword in a Lambda Expression in C++?

1. Specifies that the lambda expression is immutable

2. Allows the lambda expression to modify captured variables by value

3. Allows the lambda expression to modify captured variables by reference

4. Specifies that the lambda expression cannot modify any variables

Answer: b. Allows the lambda expression to modify captured variables by value

Q19. What is the Output of the Following Code Snippet?

1. 1

2. 2

3. 3

4. 4

Answer: The correct answer to this advanced C++ MCQ for experienced programmers is ‘c’ – 3

Q20. What is the Purpose of the std::tie Function in C++?

1. Ties two variables together  

2. Ties function arguments together  

3. Ties tuple elements to variables  

4. Ties references to pointers  

Answer: c. Ties tuple elements to variables

Q21. What is the Output of the Given Code?

1. ‘ ‘

2.  ‘w’

3. ‘,’

4. ‘o’

Answer: The correct answer to this advanced C++ MCQ for experienced programmers is ‘b’ – ‘w’

Q22. What is a Move Constructor in C++?

1.  A constructor that moves an object from one memory location to another

2. A constructor that initializes an object using another object’s memory

3. A constructor that is automatically generated by the compiler

4. A constructor that accepts rvalue references as arguments

Answer: d. A constructor that accepts rvalue references as arguments

Q23. Give the Output of the Code Snippet.

1. 5 4

2. 4 8

3. 8 4

4. 8 8

Answer: The correct answer to this advanced C++ MCQ for experienced programmers is ‘b’ – 4 8

Q24. What is the Purpose of the std::deque Container in C++?

1. A double-ended queue that allows insertion and deletion from both ends

2. A stack that follows the Last-In-First-Out (LIFO) principle

3. A queue that follows the First-In-First-Out (FIFO) principle

4. A set that stores unique elements in sorted order

Answer: a. A double-ended queue that allows insertion and deletion from both ends

Q25. What will be the Output of the Given Code Snippet?

1. 9 6 5 4 3 2 1 1

2. 1 2 3 4 5 6 9

3. 1 1 2 3 4 5 6 9 

4. 6 5 4 3 2 1 1 9

Answer: The correct answer to this advanced C++ MCQ for experienced programmers is ‘c’ – 1 1 2 3 4 5 6 9

Crack Your Upcoming Interview with Interview Kickstart

Advanced C++ is currently widely used in a variety of IT-related industries and employment categories. Programmers embrace this language because of its wide range of applications and user-friendly features. 

Interview Kickstart’s Back-End Engineering Interview Masterclass will help you learn all the key concepts of back-end, system design and data structures & algorithms. 

We offer quality guidance on how to crack your advanced C++ interviews for your dream job. Our course covers each concept, from the fundamentals to advanced concepts of C++. Along with the study material, we offer C++ MCQs that cover a wide range of topics of advanced C++ and are a crucial practice session for competent programmers. 

These C++ and OOP MCQs serve as valuable resources for practicing and reinforcing concepts, helping programmers stay sharp and up-to-date with the latest developments in C++. 

FAQs: Advanced C++ MCQs for Experienced Programmers

Q1. How Much Does a C++ Developer Earn?

A C++ developer in the USA earns an average salary of around  $130,367 per year.

Q2. What Types of Job Roles Use C++?

Advanced C++ is used in several IT sector job roles, such as the following:

• Software engineers

• Game developers

• C++ analysts

• Programming architects

• Quality analysts

Q3. How do you Prepare for a Senior-Level C++ Interview?

You should thoroughly comprehend the principles of advanced C++ programming in order to be prepared for a senior-level C++ interview. Ensure that you understand the concepts of polymorphism, inheritance, encapsulation, classes, and objects. Enrol in an advanced computer programming course at IK to receive training from FAANG experts. 

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