Arrays and Strings in C++ MCQ question and answer with solution

Home

Competitive Exams

Aptitude English Verbal Reasoning Non Verbal Reasoning General Knowledge(GK) General Science(GS) Data Interpretation(DI) Banking Awareness Current Affairs

Computer & Programming

Computer Fundamentals Networking SQL Database C Programming C++ Programming Java Python

Other Subjects

Commerce Management Law Political Science Psychology Agriculture

Exam Categories

SSC Exams Railway Exams All Exams

Popular Exams

SSC CGL SSC CHSL SSC MTS Railway Group D RRB ALP RRB Technician RRB Section Controller

Engineering Subjects

Computer Science Electronics & Communication Mechanical Engineering Civil Engineering Electrical Engineering

More Engineering

Chemical Engineering Automobile Engineering Biotechnology Mining Engineering Geological Engineering

Engineering Core

Engineering Mathematics Engineering Physics Engineering Chemistry Metallurgical Engineering

Computer Fundamentals

Computer Fundamentals Networking Database SQL MySQL

Programming

C Programming C++ Programming Java Python PHP JavaScript

Advanced

Artificial Intelligence Machine Learning Data Science Cloud Computing Hadoop IoT

Graduation & PG

Commerce Management Law Mass Communication Political Science Psychology

Resources

Current Affairs Interview Blog

What does the 'strcpy()' function do in C++?

A) Concatenates two strings B) Compares two strings C) Returns the length of a string D) Copies one string to another

Discuss

Answer & Solution

Answer: Option D

No explanation is given for this question. Let's Discuss on Board

What is the output of the following code: char str[] = "Hello"; cout << sizeof(str); in C++?

A) 6 B) 5 C) 4 D) Compilation error

Discuss

Answer & Solution

Answer: Option A

No explanation is given for this question. Let's Discuss on Board

What is the correct way to initialize a string object named 'str' in C++?

A) str("Hello"); B) str = new string("Hello"); C) str = "Hello"; D) string str = "Hello";

Discuss

Answer & Solution

Answer: Option D

No explanation is given for this question. Let's Discuss on Board

What is the purpose of the 'strcat()' function in C++?

A) Compares two strings B) Copies one string to another C) Concatenates two strings D) Returns the length of a string

Discuss

Answer & Solution

Answer: Option C

No explanation is given for this question. Let's Discuss on Board

What is the output of the following code: char str[] = "Hello"; cout << str; in C++?

A) Compilation error B) Hello C) Undefined behavior D) None of the above

Discuss

Answer & Solution

Answer: Option B

No explanation is given for this question. Let's Discuss on Board

Which of the following correctly initializes a two-dimensional array named matrix in C++ with dimensions 3x3?

A) int matrix[3][3] = {[1, 4, 7], [2, 5, 8], [3, 6, 9]}; B) int matrix[3][3] = {[1, 2, 3], [4, 5, 6], [7, 8, 9]}; C) int matrix[3][3] = {{1, 2, 3}, {4, 5, 6}, {7, 8, 9}}; D) int matrix[3][3] = {1, 2, 3, 4, 5, 6, 7, 8, 9};

Discuss

Answer & Solution

Answer: Option C

No explanation is given for this question. Let's Discuss on Board

What is the output of the following code snippet in C++? int arr[] = {1, 2, 3, 4, 5}; cout << arr[5];

A) 5 B) 0 C) Compilation error D) Undefined behavior

Discuss

Answer & Solution

Answer: Option D

No explanation is given for this question. Let's Discuss on Board

Which of the following correctly defines a string variable named name initialized with the value "John" in C++?

A) string name = "John"; B) char name[] = "John"; C) char* name = "John"; D) string name("John");

Discuss

Answer & Solution

Answer: Option A

No explanation is given for this question. Let's Discuss on Board

What is the purpose of the 'strcmp()' function in C++?

A) Returns the length of a C-style string B) Copies one C-style string to another C) Concatenates two C-style strings D) Compares two C-style strings

Discuss

Answer & Solution

Answer: Option D

No explanation is given for this question. Let's Discuss on Board

Which of the following correctly declares an array of 10 integers in C++ and initializes all elements to zero?

A) int arr[10] = {}; B) int arr[10]; for(int i = 0; i < 10; ++i) arr[i] = 0; C) int arr[10] = {0}; D) int arr[10] = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0};

Discuss

Answer & Solution

Answer: Option C

No explanation is given for this question. Let's Discuss on Board

1 2 3 4 5 6 7 8

Arrays and Strings in C++ MCQ question and answer with solution | C++ Programimg MCQs