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

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

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

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

Hard

0 vote466 runs0 comment

What are templates in C++?

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templates

templates-c++

Abha Agrawaat Dec 3, 2021

Expert

0 vote455 runs0 comment

What is the difference between a function declaration and a function prototype in C++?

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c++

function

declaration

Abha Agrawaat Nov 21, 2021

Easy

0 vote451 runs0 comment

C++ code to check if a number is between 0 and N

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array

index

Abha Agrawaat Dec 3, 2021

Hard

0 vote450 runs1 comment

What is the result of the following code? #define CONSTANT 10; int main() { return CONSTANT; }

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preprocessor

header

constants

Abha Agrawaat Nov 8, 2023

Hard

0 vote450 runs0 comment

Define a set of C function prototypes.

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c++

functions

Abha Agrawaat Dec 3, 2021

Easy

0 vote448 runs0 comment

Undefined

Back-end developer

c++

Abha Agrawaat Dec 2, 2021

Hard

0 vote446 runs1 comment

What is the purpose of the keyword `register` in C++?

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c++

registers

Abha Agrawaat Nov 25, 2021

Hard

0 vote443 runs1 comment

What is the value of a pointer to a function that has not been defined?

Back-end developer

pointers

memory

Abha Agrawaat Mar 5, 2024

Hard

0 vote442 runs0 comment

What is the output of the following code?

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pointers

references

Abha Agrawaat Dec 3, 2021

Hard

0 vote439 runs0 comment

What is the output of the following code?

Back-end developer

inheritance

access specifiers

Abha Agrawaat Nov 25, 2021

Expert

0 vote437 runs2 comments

What is the value of p1 and q1 in the following code? ```c++ int i = 0; int p = &i; int const p1 = &i; int const q1 = &p; ```

Back-end developer

pointers

references

Abha Agrawaat Mar 5, 2024

Hard

0 vote437 runs0 comment

What is the difference between a friend and a friend function in C++?

Back-end developer

friend

class

Abha Agrawaat Dec 3, 2021

Hard

0 vote433 runs0 comment

How to determine the type of a variable at runtime in C++

Back-end developer

dynamic_cast

type

Abha Agrawaat Nov 25, 2021

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

Test your technical skills before an interview of C++ with 36 corrected questions. Beginner, Intermediate or Expert level.

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.

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.

What are templates in C++?

What is the difference between a function declaration and a function prototype in C++?

C++ code to check if a number is between 0 and N

What is the result of the following code? #define CONSTANT 10; int main() { return CONSTANT; }

Define a set of C function prototypes.

Undefined

What is the purpose of the keyword `register` in C++?

What is the value of a pointer to a function that has not been defined?

What is the output of the following code?

What is the output of the following code?

What is the value of p1 and q1 in the following code? ```c++ int i = 0; int p = &i; int const p1 = &i; int const q1 = &p; ```

What is the difference between a friend and a friend function in C++?

How to determine the type of a variable at runtime in C++

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

Test your technical skills before an interview of C++ with 36 corrected questions. Beginner, Intermediate or Expert level.

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.

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.

What are templates in C++?

What is the difference between a function declaration and a function prototype in C++?

C++ code to check if a number is between 0 and N

What is the result of the following code? #define CONSTANT 10; int main() { return CONSTANT; }

Define a set of C function prototypes.

Undefined

What is the purpose of the keyword `register` in C++?

What is the value of a pointer to a function that has not been defined?

What is the output of the following code?

What is the output of the following code?

What is the value of p1 and q1 in the following code? ```c++ int i = 0; int *p = &i; int *const p1 = &i; int *const q1 = &*p; ```

What is the difference between a friend and a friend function in C++?

How to determine the type of a variable at runtime in C++

What is the value of p1 and q1 in the following code? ```c++ int i = 0; int p = &i; int const p1 = &i; int const q1 = &p; ```