77 interview questions on C++ for developers (2025)

Hard

5 votes453 runs0 comment

Which statement concerning constructors is false ?

Back-end developer

constructors

attributes

Samuelat Mar 28, 2022

Hard

4 votes250 runs0 comment

Write a C++ class with a constructor that takes two arguments.

Back-end developer

constructor

inheritance

Samuelat Mar 28, 2022

Hard

3 votes472 runs

1 comment

Write a C++ function that returns the sum of two integers.

Back-end developer

pointers

references

Abha Agrawaat Dec 3, 2021

Hard

3 votes463 runs0 comment

C++ is a general-purpose programming language. It was developed in the 1970s by Bjarne Stroustrup at Bell Labs.

Back-end developer

history

c++

Abha Agrawaat Dec 2, 2021

Medium

3 votes366 runs1 comment

How to distinguish a parameter of a method from an attribute of the class in C++

Back-end developer

c++

method

attribute

Samuelat Mar 28, 2022

Medium

2 votes379 runs1 comment

The operator + has been defined for Complexe objects thanks to an intern overloading.

Back-end developer

operators

overloading

Samuelat Mar 5, 2024

Easy

2 votes350 runs0 comment

Which type should you use to represent a data list with a length that can change ?

Back-end developer

array

vector

Samuelat Mar 28, 2022

Hard

1 vote494 runs0 comment

Which of the following sets of code will cause a compile time error?

Back-end developer

c++

compile time error

Abha Agrawaat Dec 3, 2021

Hard

1 vote486 runs0 comment

What is the purpose of a static method in C++?

Back-end developer

c++

static

singleton

Abha Agrawaat Dec 3, 2021

Hard

1 vote464 runs0 comment

C++: what is the output of the following code? `std::cout << &obj << std::endl;`

Back-end developer

references

pointers

Abha Agrawaat Dec 3, 2021

Hard

1 vote463 runs0 comment

C++ error: undefined reference to `r2'

Back-end developer

c++

error

Abha Agrawaat Nov 21, 2021

Medium

1 vote440 runs0 comment

What is the output of the following C++ code?

Back-end developer

pointers

arrays

Abha Agrawaat Dec 3, 2021

Medium

1 vote429 runs0 comment

Write a C++ program that creates an array of 10 Person objects.

Back-end developer

array

constructor

Abha Agrawaat Apr 7, 2023

Easy

1 vote412 runs0 comment

Write a C++ function that increments its input parameter and prints the result.

Back-end developer

functions

parameters

Samuelat Mar 28, 2022

Easy

1 vote372 runs0 comment

What is the default visibility of class members in C++?

Back-end developer

classes

visibility

Samuelat Mar 28, 2022

Expert

1 vote358 runs0 comment

Write a C++ program that uses static variables.

Back-end developer

static

constructor

destructor

Samuelat Mar 28, 2022

Medium

1 vote347 runs0 comment

In C++, it is possible to give a default value to a parameter of a function and two functions can have the same name if their signatures are different but not only different on the return type.

Back-end developer

functions

parameters

return type

Samuelat Mar 28, 2022

Easy

1 vote345 runs0 comment

Which statement concerning the line ": rectangle(h, l), couleur(c)" is true ? class Rectangle {...} class Couleur {...} class RectangleColore { RectangleColore(double h, double l, Couleur c) : rectangle(h, l), couleur(c) {...} private: Rectangle rectangle; Couleur couleur; }

Back-end developer

constructors

initializer list

Samuelat Mar 28, 2022

Easy

1 vote334 runs0 comment

Write a C++ program that displays a memory address.

Back-end developer

memory

pointers

Samuelat Mar 28, 2022

Easy

1 vote334 runs0 comment

Write a C++ program to add two complex numbers.

Back-end developer

operators

classes

Samuelat Mar 28, 2022

77 interview questions on C++for developers (2025)

Test your technical skills before an interview of C++ with 77 corrected questions. Beginner, Intermediate or Expert level.

Which statement concerning constructors is false ?

Write a C++ class with a constructor that takes two arguments.

Write a C++ function that returns the sum of two integers.

C++ is a general-purpose programming language. It was developed in the 1970s by Bjarne Stroustrup at Bell Labs.

How to distinguish a parameter of a method from an attribute of the class in C++

The operator + has been defined for Complexe objects thanks to an intern overloading.

Which type should you use to represent a data list with a length that can change ?

Which of the following sets of code will cause a compile time error?

What is the purpose of a static method in C++?

C++: what is the output of the following code? `std::cout << &obj << std::endl;`

C++ error: undefined reference to `r2'

What is the output of the following C++ code?

Write a C++ program that creates an array of 10 Person objects.

Write a C++ function that increments its input parameter and prints the result.

What is the default visibility of class members in C++?

Write a C++ program that uses static variables.

In C++, it is possible to give a default value to a parameter of a function and two functions can have the same name if their signatures are different but not only different on the return type.

Which statement concerning the line ": rectangle(h, l), couleur(c)" is true ? class Rectangle {...} class Couleur {...} class RectangleColore { RectangleColore(double h, double l, Couleur c) : rectangle(h, l), couleur(c) {...} private: Rectangle rectangle; Couleur couleur; }

Write a C++ program that displays a memory address.

Write a C++ program to add two complex numbers.