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C++ Online Test

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The C++ online test assesses candidates' knowledge of programming in the C++ language and their ability to leverage commonly used parts of the C++ Standard Library.

It's an ideal test for pre-employment screening. A good C++ developer needs to be able not only to solve problems using C++ but also recognize when to leverage the functionality provided by the Standard Library to write robust and maintainable code.

This online test requires candidates to solve coding problems in C++ and find and fix bugs in a C++ program.

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Free Sample Questions for C++ Test

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Merge Names

10min
  -  
Easy  
  -  
CODE

C++ Arrays Public

Implement the unique_names method. When passed two vectors of names, it will return a vector containing the names that appear in either or both vectors. The returned vector should have no duplicates.

For example, calling unique_names(std::vector<std::string>{"Ava", "Emma", "Olivia"}, std::vector<std::string>{"Olivia", "Sophia", "Emma"}) should return a vector containing Ava, Emma, Olivia, and Sophia in any order.

Binary Search Tree

15min
  -  
Easy  
  -  
CODE

C++ Algorithmic thinking Recursion Tree Public

A three-node binary tree.Binary search tree (BST) is a binary tree where the value of each node is larger or equal to the values in all the nodes in that node's left subtree and is smaller than the values in all the nodes in that node's right subtree.

Write a function that, efficiently with respect to time used, checks if a given binary search tree contains a given value.

For example, for the following tree:

  • n1 (Value: 1, Left: null, Right: null)
  • n2 (Value: 2, Left: n1, Right: n3)
  • n3 (Value: 3, Left: null, Right: null)

Call to contains(n2, 3) should return true since a tree with root at n2 contains number 3.

User Input

15min
  -  
Easy  
  -  
CODE

C++ Inheritance OOP Public

User interface contains two types of user input controls: TextInput, which accepts all characters and NumericInput, which accepts only digits.

Implement the following methods:

  • add on class TextInput - adds the given character to the current value
  • getValue on class TextInput - returns the current value
  • add on class NumericInput - overrides the base class method so that each non-numeric character is ignored

For example, the following code should output "10":

TextInput* input = new NumericInput();
input->add('1');
input->add('a');
input->add('0');
std::cout << input->getValue();
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Premium Questions for C++ Test

TestDome offers a premium questions library with 1000+ unique, hand-crafted questions whose answers can’t be found online. If you spot an answer somewhere online, we’ll give you a refund.

Covered Skills

Testing of these skills is covered in this pre-built test because they’re closely related. On our paid plan, you can easily create your own custom multi-skill tests.

C++ Bug fixing Language Memory management Exceptions Vector Stream Strings Algorithmic thinking Arithmetic Conditional statements Destructors Linked list Regex Queue Iteration Map Arrays Tree Recursion Data structures Complexity Stack Unordered map Pointers Sorting Graphs Hash and equals Dynamic programming Unordered set Inheritance Method overriding OOP Higher order function Interfaces Integer division
Recommended Job Roles

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Back-End Developer
C++ Developer

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