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About the test:

The C++ Online Test uses scenario-based and code tracing MCQ questions to evaluate a candidate's ability to write C++ programs (data types, functions, data structures, STL), structure the code using Object-oriented programming principles (classes, inheritance, polymorphism, overloading), handle exceptions and manage memory. The test uses coding questions to evaluate hands-on C++ coding skills.

Covered skills:

  • C++ basics (Data Types; Variables; Operators)
  • modules and data structures
  • Using existing classes and creating new classes
  • Memory model and memory management
  • Functions and Class templates
  • Catching errors and handling exceptions
  • Functions
  • Pointers and references
  • OOPS (Inheritance; Polymorphism; Overloading)
  • STL (arrays; vectors; maps; sets)
  • Reading and writing to files
  • Concurrency features

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9 reasons why
9 reasons why

Adaface C++ Test is the most accurate way to shortlist C++ Developers



Reason #1

Tests for on-the-job skills

The C++ Online Test helps recruiters and hiring managers identify qualified candidates from a pool of resumes, and helps in taking objective hiring decisions. It reduces the administrative overhead of interviewing too many candidates and saves time by filtering out unqualified candidates at the first step of the hiring process.

The test screens for the following skills that hiring managers look for in candidates:

  • Able to understand and use C++ data types, variables, and operators effectively
  • Proficient in creating and utilizing functions, modules, and data structures in C++
  • Skilled in working with pointers and references in C++
  • Capable of using existing classes and creating new classes in C++
  • Understanding and application of Object-Oriented Programming concepts including inheritance, polymorphism, and overloading
  • Knowledge and practical experience of the C++ memory model and memory management
  • Familiarity with Standard Template Library (STL) and its implementations such as arrays, vectors, maps, and sets
  • Ability to work with functions and class templates in C++
  • Proficient in reading from and writing to files in C++
  • Skilled in catching errors and handling exceptions in C++
  • Understanding of concurrency features in C++
Reason #2

No trick questions

no trick questions

Traditional assessment tools use trick questions and puzzles for the screening, which creates a lot of frustration among candidates about having to go through irrelevant screening assessments.

View sample questions

The main reason we started Adaface is that traditional pre-employment assessment platforms are not a fair way for companies to evaluate candidates. At Adaface, our mission is to help companies find great candidates by assessing on-the-job skills required for a role.

Why we started Adaface
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Reason #3

Non-googleable questions

We have a very high focus on the quality of questions that test for on-the-job skills. Every question is non-googleable and we have a very high bar for the level of subject matter experts we onboard to create these questions. We have crawlers to check if any of the questions are leaked online. If/ when a question gets leaked, we get an alert. We change the question for you & let you know.

How we design questions

These are just a small sample from our library of 10,000+ questions. The actual questions on this C++ Online Test will be non-googleable.

🧐 Question

Medium

Overloading
OOPs
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What will the following C++ code output?
 image

Medium

Exceptions
Exceptions
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What will the following C++ code output?
 image

Easy

Namespaces
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What will the following C++ code output?
 image

Medium

Struct Class
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What will the following C++ code output?
 image

Easy

Registration Queue
Logic
Queues
Solve
We want to register students for the next semester. All students have a receipt which shows the amount pending for the previous semester. A positive amount (or zero) represents that the student has paid extra fees, and a negative amount represents that they have pending fees to be paid. The students are in a queue for the registration. We want to arrange the students in a way such that the students who have a positive amount on the receipt get registered first as compared to the students who have a negative amount. We are given a queue in the form of an array containing the pending amount.
For example, if the initial queue is [20, 70, -40, 30, -10], then the final queue will be [20, 70, 30, -40, -10]. Note that the sequence of students should not be changed while arranging them unless required to meet the condition.
⚠️⚠️⚠️ Note:
- The first line of the input is the length of the array. The second line contains all the elements of the array.
- The input is already parsed into an array of "strings" and passed to a function. You will need to convert string to integer/number type inside the function.
- You need to "print" the final result (not return it) to pass the test cases.

For the example discussed above, the input will be:
5
20 70 -40 30 -10

Your code needs to print the following to the standard output:
20 70 30 -40 -10

Medium

Visitors Count
Strings
Logic
Solve
A manager hires a staff member to keep a record of the number of men, women, and children visiting the museum daily. The staff will note W if any women visit, M for men, and C for children. You need to write code that takes the string that represents the visits and prints the count of men, woman and children. The sequencing should be in decreasing order. 
Example:

Input:
WWMMWWCCC

Expected Output: 
4W3C2M

Explanation: 
‘W’ has the highest count, then ‘C’, then ‘M’. 
⚠️⚠️⚠️ Note:
- The input is already parsed and passed to a function.
- You need to "print" the final result (not return it) to pass the test cases.
- If the input is- “MMW”, then the expected output is "2M1W" since there is no ‘C’.
- If any of them have the same count, the output should follow this order - M, W, C.
🧐 Question🔧 Skill

Medium

Overloading
OOPs

2 mins

C++
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Medium

Exceptions
Exceptions

2 mins

C++
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Easy

Namespaces

2 mins

C++
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Medium

Struct Class

2 mins

C++
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Easy

Registration Queue
Logic
Queues

30 mins

Coding
Solve

Medium

Visitors Count
Strings
Logic

30 mins

Coding
Solve
🧐 Question🔧 Skill💪 Difficulty⌛ Time
Overloading
OOPs
C++
Medium2 mins
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Exceptions
Exceptions
C++
Medium2 mins
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Namespaces
C++
Easy2 mins
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Struct Class
C++
Medium2 mins
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Registration Queue
Logic
Queues
Coding
Easy30 minsSolve
Visitors Count
Strings
Logic
Coding
Medium30 minsSolve
Reason #4

1200+ customers in 75 countries

customers in 75 countries
Brandon

With Adaface, we were able to optimise our initial screening process by upwards of 75%, freeing up precious time for both hiring managers and our talent acquisition team alike!


Brandon Lee, Head of People, Love, Bonito

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Reason #5

Designed for elimination, not selection

The most important thing while implementing the pre-employment C++ Online Test in your hiring process is that it is an elimination tool, not a selection tool. In other words: you want to use the test to eliminate the candidates who do poorly on the test, not to select the candidates who come out at the top. While they are super valuable, pre-employment tests do not paint the entire picture of a candidate’s abilities, knowledge, and motivations. Multiple easy questions are more predictive of a candidate's ability than fewer hard questions. Harder questions are often "trick" based questions, which do not provide any meaningful signal about the candidate's skillset.

Science behind Adaface tests
Reason #6

1 click candidate invites

Email invites: You can send candidates an email invite to the C++ Online Test from your dashboard by entering their email address.

Public link: You can create a public link for each test that you can share with candidates.

API or integrations: You can invite candidates directly from your ATS by using our pre-built integrations with popular ATS systems or building a custom integration with your in-house ATS.

invite candidates
Reason #7

Detailed scorecards & benchmarks

View sample scorecard
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Reason #8

High completion rate

Adaface tests are conversational, low-stress, and take just 25-40 mins to complete.

This is why Adaface has the highest test-completion rate (86%), which is more than 2x better than traditional assessments.

test completion rate
Reason #9

Advanced Proctoring


Learn more

About the C++ Assessment Test

Why you should use Pre-employment C++ Online Test?

The C++ Online Test makes use of scenario-based questions to test for on-the-job skills as opposed to theoretical knowledge, ensuring that candidates who do well on this screening test have the relavant skills. The questions are designed to covered following on-the-job aspects:

  • Able to work with various data types and variables
  • Understands and applies operators
  • Proficient in using functions, modules, and data structures
  • Able to work with pointers and references
  • Capable of utilizing existing classes and creating new classes
  • Knowledgeable in OOPS concepts such as inheritance, polymorphism, and overloading
  • Familiar with the memory model and memory management
  • Adept in utilizing STL features like arrays, vectors, maps, and sets
  • Experienced in working with functions and class templates

Once the test is sent to a candidate, the candidate receives a link in email to take the test. For each candidate, you will receive a detailed report with skills breakdown and benchmarks to shortlist the top candidates from your pool.

What topics are covered in the C++ Online Test?

  • C++ Basics

    C++ Basics covers the fundamental building blocks of the C++ programming language, including data types, variables, and operators. This skill is essential to assess as it forms the foundation for understanding and writing C++ code accurately and efficiently.

  • Functions, Modules and Data Structures

    This skill focuses on the use of functions, modules, and data structures in C++. It is important to measure this skill as it demonstrates the candidate's ability to organize code, manage dependencies, and implement efficient data structures for optimal performance.

  • Pointers and References

    Pointers and references are advanced concepts in C++ that allow for more efficient memory management and manipulation. Measuring this skill helps assess a candidate's understanding of memory allocation, addressing, and the ability to work with complex data structures.

  • Using Existing Classes and Creating New Classes

    Assessing the candidate's ability to work with existing classes and create new classes is crucial for determining proficiency in object-oriented programming. This skill showcases the candidate's knowledge of encapsulation, inheritance, and abstraction, which are fundamental concepts in OOP.

  • OOPS (Inheritance, Polymorphism, Overloading)

    OOPS, which stands for Object-Oriented Programming (OOP) concepts such as inheritance, polymorphism, and overloading, is a key skill to measure in this test. It helps determine the candidate's understanding of code reuse, flexibility, and extensibility, which are essential principles in designing and implementing modular and maintainable code.

  • Memory Model and Memory Management

    This skill evaluates the candidate's understanding of how memory is organized and managed in C++. It is important to measure as it demonstrates the candidate's knowledge of memory allocation, deallocation, and optimization, which can greatly impact the performance and stability of a program.

  • STL (Arrays, Vectors, Maps, Sets)

    Assessing knowledge of the Standard Template Library (STL) in C++ is crucial as it provides a set of powerful data structures and algorithms that can greatly simplify and enhance code development. This skill indicates the candidate's familiarity with using commonly used data structures such as arrays, vectors, maps, and sets, which are essential for efficient and effective programming.

  • Functions and Class Templates

    Understanding and working with function and class templates in C++ is important as it allows for generic programming and code reuse. Measuring this skill helps determine the candidate's ability to write flexible and reusable code that can be adapted to various data types and requirements.

  • Reading and Writing to Files

    Being able to read and write data to files is a crucial skill in many real-world applications. Measuring this skill helps assess the candidate's ability to handle file I/O operations, which are essential for data persistence, configuration, and interaction with external resources.

  • Catching Errors and Handling Exceptions

    Measuring this skill helps determine the candidate's ability to handle errors and exceptions in C++. It demonstrates their proficiency in implementing error detection, recovery, and graceful program termination, which contributes to the robustness and reliability of a software system.

  • Concurrency Features

    Assessing knowledge of concurrency features in C++ is important as it enables multitasking, parallel execution, and efficient utilization of system resources. This skill demonstrates the candidate's understanding of threads, synchronization mechanisms, and the ability to write safe and efficient concurrent code.

  • Full list of covered topics

    The actual topics of the questions in the final test will depend on your job description and requirements. However, here's a list of topics you can expect the questions for C++ Online Test to be based on.

    Data Types
    Variables
    Operators
    Functions
    Modules
    Data Structures
    Pointers
    References
    Existing Classes
    New Classes
    Inheritance
    Polymorphism
    Overloading
    Memory Model
    Memory Management
    STL Arrays
    STL Vectors
    STL Maps
    STL Sets
    Function Templates
    Class Templates
    File I/O
    Error Handling
    Exceptions
    Concurrency
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What roles can I use the C++ Online Test for?

  • C++ Developer
  • C++ Software Engineer
  • Backend Developer
  • Senior Software Engineer (C++)
  • C++ Systems Engineer
  • Senior C++ Developer
  • Embedded C++ Developer
  • Quant Developer (C++)

How is the C++ Online Test customized for senior candidates?

For intermediate/ experienced candidates, we customize the assessment questions to include advanced topics and increase the difficulty level of the questions. This might include adding questions on topics like

  • Able to read from and write to files
  • Skilled in catching errors and handling exceptions
  • Proficient in utilizing concurrency features
  • Advanced understanding and application of functions, modules, and data structures
  • Capable of advanced utilization of pointers and references
  • Skilled in utilizing existing complex classes and creating new complex classes

The coding question for experienced candidates will be of a higher difficulty level to evaluate more hands-on experience.

Singapore government logo

The hiring managers felt that through the technical questions that they asked during the panel interviews, they were able to tell which candidates had better scores, and differentiated with those who did not score as well. They are highly satisfied with the quality of candidates shortlisted with the Adaface screening.


85%
reduction in screening time

C++ Hiring Test FAQs

Can I evaluate C++ and Embedded C in the same test?

Yes. You can review our standard Embedded C test to get a sense of how Embedded C is evaluated. The final assessment would have questions to evaluate Embedded C, C++ and Coding skills.

Can I combine multiple skills into one custom assessment?

Yes, absolutely. Custom assessments are set up based on your job description, and will include questions on all must-have skills you specify. Here's a quick guide on how you can request a custom test.

Do you have any anti-cheating or proctoring features in place?

We have the following anti-cheating features in place:

  • Non-googleable questions
  • IP proctoring
  • Screen proctoring
  • Web proctoring
  • Webcam proctoring
  • Plagiarism detection
  • Secure browser
  • Copy paste protection

Read more about the proctoring features.

How do I interpret test scores?

The primary thing to keep in mind is that an assessment is an elimination tool, not a selection tool. A skills assessment is optimized to help you eliminate candidates who are not technically qualified for the role, it is not optimized to help you find the best candidate for the role. So the ideal way to use an assessment is to decide a threshold score (typically 55%, we help you benchmark) and invite all candidates who score above the threshold for the next rounds of interview.

What experience level can I use this test for?

Each Adaface assessment is customized to your job description/ ideal candidate persona (our subject matter experts will pick the right questions for your assessment from our library of 10000+ questions). This assessment can be customized for any experience level.

Does every candidate get the same questions?

Yes, it makes it much easier for you to compare candidates. Options for MCQ questions and the order of questions are randomized. We have anti-cheating/ proctoring features in place. In our enterprise plan, we also have the option to create multiple versions of the same assessment with questions of similar difficulty levels.

I'm a candidate. Can I try a practice test?

No. Unfortunately, we do not support practice tests at the moment. However, you can use our sample questions for practice.

What is the cost of using this test?

You can check out our pricing plans.

Can I get a free trial?

Yes, you can sign up for free and preview this test.

I just moved to a paid plan. How can I request a custom assessment?

Here is a quick guide on how to request a custom assessment on Adaface.

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