77 interview questions on C++ for developers (2024)

Hard

4 votes176 runs0 comment

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

Back-end developer

constructor

inheritance

Samuelat Mar 28, 2022

Hard

3 votes424 runs0 comment

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

Back-end developer

pointers

references

Abha Agrawaat Dec 3, 2021

Hard

3 votes331 runs0 comment

Which statement concerning constructors is false ?

Back-end developer

constructors

attributes

Samuelat Mar 28, 2022

Hard

2 votes417 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

Easy

2 votes259 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 vote446 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 vote445 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 vote427 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

Medium

1 vote398 runs0 comment

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

Back-end developer

pointers

arrays

Abha Agrawaat Dec 3, 2021

Medium

1 vote390 runs0 comment

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

Back-end developer

array

constructor

Abha Agrawaat Apr 7, 2023

Medium

1 vote277 runs1 comment

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

Back-end developer

operators

overloading

Samuelat Mar 5, 2024

Medium

1 vote265 runs

1 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

Expert

1 vote256 runs0 comment

Write a C++ program that uses static variables.

Back-end developer

static

constructor

destructor

Samuelat Mar 28, 2022

Medium

1 vote253 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

Hard

1 vote250 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 vote246 runs0 comment

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

Back-end developer

memory

pointers

Samuelat Mar 28, 2022

Easy

1 vote245 runs0 comment

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

Back-end developer

operators

classes

Samuelat Mar 28, 2022

Easy

1 vote243 runs0 comment

Print the message 'n = 10' in C++

Back-end developer

cout

iostream

Samuelat Mar 28, 2022

Medium

1 vote49 runs0 comment

What are the different parts of a function prototype in C++?

Back-end developer

functions

parameters

Samuelat Mar 28, 2022

Hard

1 vote26 runs0 comment

What does the following code display ? class A { public: virtual void hello() {cout << "A" << endl;} }; class B : public A { public: void hello() {cout << "B" << endl;} }; void meet_value(A a1, A a2) { a1.hello(); a2.hello(); } void meet_reference(A& a1, A& a2) { a1.hello(); a2.hello(); } int main() { B b; A a; meet_value(a, b); meet_reference(a, b); return 0; } Answer : "AAAB".

Back-end developer

inheritance

virtual functions

Samuelat Mar 28, 2022

77 interview questions on C++for developers (2024)

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

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

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

Which statement concerning constructors is false ?

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

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;`

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

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

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

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

Write a C++ program that uses static variables.

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; }

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.

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

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

Print the message 'n = 10' in C++

What are the different parts of a function prototype in C++?