41 interview questions on C++ - Fundamentals for developers (2026)

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constructors

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virtual functions

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constructors

initializer list

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virtual functions

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41 interview questions on C++ - Fundamentalsfor developers (2026)

Test your technical skills before an interview of C++ - Fundamentals with 41 corrected questions. Beginner, Intermediate or Expert level.

41 interview questions on C++ - Fundamentalsfor developers (2026)

Test your technical skills before an interview of C++ - Fundamentals with 41 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++ program that uses static variables.

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

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

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

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 to add two complex numbers.

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

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

What does the following code display ? class A { public: A() { f(); } virtual void f() { cout << "A" << endl; } }; class B : public A { public: void f() { cout << "B" << endl; } }; int main() { A a; B b; A* pa(&b); pa->f(); return 0; }

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 function to display objects of type Complex.

How to use the logic operators AND / OR / NOT in C++

Which method of a vector adds an element to it?

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

Write a C++ program that displays 111111.

What does the following code return ? int main() { int i = 1; int& j(i); i = 4; cout << j << endl; j = 6; cout << i << endl; return 0; }

Write a C++ function that returns the largest of 3 integers.