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

A. int* arr = new int[size];

B. int[] arr = new int[size];

C. int arr = new int[size];

D. int arr[size];

A. arr(3)

B. arr[3]

C. arr[2]

D. arr(2)

A. 11

B. 10

C. Depends on the length of the string assigned to 'str'

D. None of these

A. Concatenates two strings

B. Compares two strings

C. Returns the length of a null-terminated string

D. Copies a string to another string

A. arr[] = {0};

B. arr = {0};

C. arr.fill(0);

D. for (int i = 0; i < size; ++i) { arr[i] = 0; }

A. int arr[rowSize][colSize];

B. int arr = new int[rowSize][colSize];

C. int[] arr[rowSize][colSize];

D. int* arr[rowSize][colSize];

A. They must be declared using the 'string' keyword

B. They are objects of the 'string' class

C. They can have variable lengths

D. They are represented as arrays of characters terminated by a null character

A. H

B. o

C. Undefined behavior

D. Compilation error

A. Subtracting the address of the first character from the last

B. Using the 'strlen()' function

C. Counting the number of elements in the array

D. None of the above

A. By declaring the array as global

B. By passing the array itself

C. Using a pointer to the array

D. By passing each element of the array individually