C++ Online Test

TestDome skill assessments are used by more than 8,000 companies and 880,000 test takers.

For Jobseekers

Practice your skills and earn a certificate of achievement when you score in the top 25%.

Take a Practice Test

For Companies

Test candidates with real-world problems and interview the best ones.

Sign Up to Offer this Test

About the test

The C++ online test assesses knowledge of programming in the C++ language and commonly used parts of the C++ Standard Library. This test requires solving live coding problems in C++.

The assessment includes work-sample tasks such as:

  • Implementing and properly using algorithms and data structures to optimize application performance.
  • Optimizing memory management and fixing memory leaks.
  • Working with OOP principles and higher-order functions to write reusable code.

A good C++ developer needs a solid understanding of the C++ programming language and the ability to take advantage of the functionality provided by the Standard Library to write robust and maintainable code.

Sample public questions

New
Easy
15 min
code
Public
C++
Algorithmic Thinking
Linked List
Unordered Set

A playlist is considered a repeating playlist if any of the songs contain a pointer to a previous song in the playlist. Otherwise, the playlist will end with the last song which points to NULL.

Implement a function isInRepeatingPlaylist that, efficiently with respect to time used, returns true if a playlist is repeating or false if it is not.

For example, the following code prints "true" as both songs point to each other.

Song* first = new Song("Hello");
Song* second = new Song("Eye of the tiger");
    
first->next(second);
second->next(first);

std::cout << std::boolalpha << first->isInRepeatingPlaylist();
Hard
10 min
code
Public
C++
Closures
Higher Order Function

As part of a data processing pipeline, complete the implementation of the makePipeline method:

  • The makePipeline method should accept a vector of functions, and it should return a new function that accepts one parameter arg.
  • The returned function should call the first function in makePipeline with the parameter arg, and call the second function with the result of the first function.
  • The returned function should continue calling each function in makePipeline in order, following the same pattern, and return the value from the last function.

For example,

std::vector<std::function<int (int)>> functions;
functions.push_back([] (int x) -> int { return x * 3; });
functions.push_back([] (int x) -> int { return x + 1; });
functions.push_back([] (int x) -> int { return x / 2; });
std::function<int (int)> func = makePipeline(functions);

and then calling func(3) should return 5.

For jobseekers: get certified

Earn a free certificate by achieving top 25% on the C++ test with public questions.

Take a Certification Test

Sample silver certificate

Sunshine Caprio

Java and SQL
TestDome
Certificate
TestDome logo icon

For companies: premium questions

Buy TestDome to access premium questions that can't be practiced.
Get money back if you find any premium question answered online.

Sign Up to Offer this Test

47 more premium C++ questions

Non Zero, Babushka Doll, Max Sum, Shipping, Unique Numbers, Moving Total, Increment, Crop Ratio, Stack to Vector, Internal Nodes, Segment, Chain Link, Tiles, Language Teacher, Friend, Book Sale, Fire Dragon, Battery, Weighted Average, Paper Strip, Node, Kilometer Converter, Unique Product, Archive, Function Cache, Veterinarian, Platformer, Hobbies, Date Transform, Out of Range, String Occurrence, Worker, Stories, Username, Window Manager, Document Store, Paragraph, Read Write Execute, Vectors, Animal Hierarchy, Sort Params, Flight Connections, Read First Line, Patient Class, Procedural Generator, Limits, Ship.

Skills and topics tested

  • C++
  • Bug Fixing
  • Language
  • Memory Management
  • Algorithmic Thinking
  • Arithmetic
  • Unordered Map
  • Unordered Set
  • Arrays
  • Pointers
  • Integer Division
  • Complexity
  • Stack
  • Vector
  • Tree
  • Linked List
  • Inheritance
  • OOP
  • Graphs
  • Sorting
  • Higher Order Function
  • Interfaces
  • Exceptions
  • Recursion
  • Method Overriding
  • Destructors
  • Hash and Equals
  • Queue
  • Data Structures
  • Iteration
  • Map
  • Regex
  • Strings
  • Stream
  • Dynamic Programming
  • Abstract Class
  • Pass by Reference
  • Random
  • Conditions

For job roles

  • Back-End Developer
  • C++ Developer

Sample candidate report

What others say

Decorative quote

Simple, straight-forward technical testing

TestDome is simple, provides a reasonable (though not extensive) battery of tests to choose from, and doesn't take the candidate an inordinate amount of time. It also simulates working pressure with the time limits.

Jan Opperman, Grindrod Bank

Product reviews

G2 - Crowd Badge
G2 - High Performer (2022)
Capterra - 4.5 Stars
Capterra - Shortlist (2022)

Used by

Solve all your skill testing needs

150+ Pre-made tests

From web development and database administration to project management and customer support. See all pre-made tests.

90+ skills

From JavaScript and SQL to English and customer support. See all questions to filter by skill.

Multi-skills Test

Mix questions for different skills or even custom questions in one test. See an example.

How TestDome works

1

Choose a pre-made test
or create a custom test

2

Invite candidates via
email, URL, or your ATS

3

Candidates take
a test remotely

4

Sort candidates and
get individual reports

Want to know more?