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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
  • Functions
  • Pointers and references
See all covered skills

9 reasons why
9 reasons why

Adaface C++ Online 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 expensive engineering time by filtering out unqualified candidates.

The test screens candidates for the following skills:

  • C++ fundamentals (variables, branching and looping, functions, reference parameters, arrays, strings, vectors)
  • i/o operation on files and i/o streams
  • Memory management, including pointers, references, move & copy constructors
  • OOPs concepts (Classes, operator overloading, composition, inheritance, polymorphism, templates, concurrency, etc.)
  • Implementation of common data structures and algorithms
  • Efficient usage of in-built functions and pointers
  • Standard template library classes (Vectors, Sets, Queues)
  • Library Utilities - tuples, pairs, date & time
  • Exceptions handling
Reason #2

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.

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 ->
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.

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

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

Options:

  • 12(2)1
  • 21(2)(1)
  • 21(1)(2)
  • 12(2)13
  • 21(1)3(2)
  • 213(2)(1)
  • 1312(2)(1)
  • 1213(1)(2)

Easy

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

Options:

  • 00
  • 01
  • 10
  • 11

Medium

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

Options:

  • 1221
  • 1222
  • 1121
  • 1122
  • 2221
  • 2121
  • 2122

Medium

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

Options:

  • 1 2 ~1 ~2 !1 !2
  • 1 ~1 2 ~2 ~2
  • 2 !2 1 ~1
  • 2 ~2 1 ~1
  • 1 2 ~1 !2
  • 2 1 ~2 !2 ~1

Medium

Longest Road
logic
hashmaps
Solve
                        A startup company E-Motors is building driverless automated cars. The car contains a sensor that checks the road quality for the next N meters to decide the optimal speed at which the cars should move. We are given recorded data by the sensor in the form of an array, where each element of the array is the rating given to 1 meter of the road in sequence. 

The rating given by the sensor is from 1 to 100, where 100 represents the road with the best condition, and any rating above 60 is optimal. Find the longest stretch of road in meters that is categorized as optimal by the sensor.

The input is an array of "strings" which needs to be converted from string to integer/number inside the function.
    🧐 Question🔧 Skill

    Medium

    Exceptions
    Exceptions
    2 mins
    C++
    Solve

    Easy

    Namespaces
    2 mins
    C++
    Solve

    Medium

    Struct Class
    2 mins
    C++
    Solve

    Medium

    Overloading
    OOPs
    2 mins
    C++
    Solve

    Medium

    Longest Road
    logic
    hashmaps
    25 mins
    Coding
    Solve
    🧐 Question🔧 Skill💪 Difficulty⌛ Time
    Exceptions
    Exceptions
    C++
    Medium2 mins
    Solve
    Namespaces
    C++
    Easy2 mins
    Solve
    Struct Class
    C++
    Medium2 mins
    Solve
    Overloading
    OOPs
    C++
    Medium2 mins
    Solve
    Longest Road
    logic
    hashmaps
    Coding
    Medium25 minsSolve
    Reason #4

    1200+ 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

    Reason #5

    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.

    Reason #6

    Detailed scorecards & comparative results

    Reason #7

    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.

    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.

    Reason #9

    Advanced Proctoring


    How does the test differ for Senior C++ developers?

    Our subject matter experts customize the test according to seniority in two ways:

    • The topics chosen for senior developers will be of higher level whereas for junior developers the topics will be around the core basics. This will ensure that the senior developers are tested on on-the-job skills that they are expected to have
    • Difficulty level of questions will be varied based on the seniority level. This way senior developers are vetted on in-depth usage of the core topics whereas junior developers are vetted on the knowledge of core topics

    Here are a few topics assessed in Senior developer assessments:

    • C++ concurrency (threads, mutex, package_task, future, async, promise)
    • Lock based thread-safe implementation of data structures
    • Advanced STL (priority queues, multi maps, multisets etc)
    • Creating own function templates and class templates
    • Non-STL Algorithms
    • Memory management, including pointers, references, move & copy constructors
    • Avoiding memory leaks and using RAII strategy with unique pointers, shared pointers and weak pointers
    • Knowledge of interface segregation and dependency inversion
    • Functional Programming and inversion of control

    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++)

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

    Identifiers
    Keywords
    Data Types
    Variables
    Operators
    String manipulation
    Namespaces
    Object-oriented programming (OOP)
    Classes and objects
    Constructor, operator and function overloading
    Inheritance
    Polymorphism
    Functions
    Pointers
    Smart Pointers
    STL (Arrays, Vectors, Lists etc.)
    Lambda expressions
    IO Streams
    File IO
    Concurrent programming
    Threads and pools
    Mutex and Locks
    Futures and Promises
    Function templates
    Errors and exception handling
    Memory management
    Utilities
    Algorithms
    Functional programming
    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++ Online 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.

    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
    • Web proctoring
    • Webcam proctoring
    • Plagiarism detection
    • Secure browser

    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.

    Join 1200+ companies in 75+ countries.
    Try the most candidate friendly skills assessment tool today.
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