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

A. Concatenates two strings

B. Compares two strings

C. Returns the length of a string

D. Copies one string to another

A. 6

B. 5

C. 4

D. Compilation error

A. str("Hello");

B. str = new string("Hello");

C. str = "Hello";

D. string str = "Hello";

A. Compares two strings

B. Copies one string to another

C. Concatenates two strings

D. Returns the length of a string

A. Compilation error

B. Hello

C. Undefined behavior

D. None of the above

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};

A. 5

B. 0

C. Compilation error

D. Undefined behavior

A. string name = "John";

B. char name[] = "John";

C. char* name = "John";

D. string name("John");

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

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};