Programming

C++ Core Knowledge Assessment - Programming

Evaluate your proficiency with fundamental and advanced C++ programming concepts.

Duration

Complete at your own pace or within the time limit

Questions

Multiple choice with one correct answer

Accuracy

Expert-reviewed questions with clear answer keys

Results

Instant detailed breakdown by topic area

Cpp - Test
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About This Test

This comprehensive test measures your overall understanding of C++ language features and best practices.

The test assesses your knowledge of memory management, object-oriented programming, templates, and the Standard Library. It covers both foundational concepts and advanced techniques used in production C++ development.

Questions present real-world coding scenarios, syntax challenges, and design pattern implementations. You'll encounter problems requiring understanding of pointers, inheritance, STL containers, and modern C++ features.

Review your score breakdown to identify which C++ topics need reinforcement. Use weak areas as a learning roadmap to deepen your expertise in specific language features.

What the C++ Assessment Measures

Language Breadth

Coverage spanning syntax, classes, templates, the STL, and modern features so the result reflects overall command of the language.

Memory Reasoning

Questions on stack versus heap, smart pointers, and RAII that reveal whether you can manage resources safely without a garbage collector.

Practical Judgment

Scenarios asking you to choose containers, spot undefined behavior, and apply idioms the way a working C++ developer would.

Standard Evolution

Items touching C++11 through recent standards, including move semantics, lambdas, and structured bindings that define modern style.

Sample Questions

A few real questions from this test, with answers and explanations. Take the full test above for the complete set.

Which operator is used to access a member of an object through a pointer to that object?

Answer: The arrow operator (->)

The arrow operator -> dereferences a pointer and accesses a member in one step; p->m is equivalent to (*p).m. The dot operator is used on objects and references directly.

Which STL container provides fast random access and stores its elements contiguously?

Answer: std::vector

std::vector stores elements in a contiguous block, giving O(1) random access by index. std::list is a linked list without random access, and map/set are tree-based associative containers.

What does the sizeof operator return?

Answer: The size in bytes of a type or object

sizeof yields the size, in bytes, of a type or object at compile time. sizeof(char) is always 1, and other sizes are implementation-defined multiples of that.

What is the purpose of a constructor's member initializer list, as in Foo() : x_(0) {}?

Answer: It initializes members directly, which is required for const and reference members

The initializer list constructs members before the constructor body runs. It is required for const members, reference members, and members lacking a default constructor, and avoids a redundant default-then-assign.

What must a function be declared to enable dynamic dispatch through a base-class pointer?

Answer: virtual

Declaring a member function virtual enables run-time (dynamic) dispatch, so a call through a base pointer or reference invokes the derived override matching the object's actual type.

Frequently Asked Questions

Find answers to common questions about this assessment

It spans classic C++ through modern standards, so you will see traditional topics like pointers and classes alongside newer features such as move semantics, lambdas, auto, and smart pointers introduced from C++11 onward.

You should know the common containers and algorithms and their complexity trade-offs, but the test rewards understanding when to use each over memorizing every overload. Judgment about vector versus map matters more than reciting signatures.

It covers general C++ competence rather than one domain, though memory management and performance reasoning feature heavily because those are central to how C++ is used across games, systems, and services.

Treat weak areas as a study map. If memory and RAII questions trip you up, focus there before an interview; if idioms and best practices are shaky, review the Core Guidelines and modern patterns.

Scores are based on the number of correct answers divided by total questions, with a breakdown by topic category.

Yes, questions are randomly selected and ordered from our question bank to ensure each attempt is unique.

No account is required. You can take the test immediately. Optionally provide an email to save your results.

There is no pass/fail threshold. The test measures your knowledge level and provides detailed feedback for improvement.

For knowledge tests, we recommend answering without external help to get an accurate assessment. Practice exercises are designed for learning, so references are acceptable.

Our questions are written for structured educational practice and can give a useful snapshot of your current knowledge in the tested topics.

Learn how our tests are designed, scored, and validated.

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