Array Quiz

What is an array?

• A. A data structure that stores elements of the same type.

• B. A data structure that stores elements of different types.

• C. A single value that can change type.

• D. A collection of unrelated elements.

Which of the following is the correct way to declare an array in C?

• A. int arr[];

• B. int arr[10];

• C. array int arr[10];

• D. int array[10];

What is the index of the last element in an array of size n?

• A. n

• B. n-1

• C. n+1

• D. n-2

Which of the following operations is the fastest on an array?

• A. Insertion at the beginning

• B. Deletion at the beginning

• C. Accessing an element by index

• D. Insertion in the middle

How do you access the first element of an array arr in C?

• A. arr[1]

• B. arr(0)

• C. arr[0]

• D. arr{0}

Which of the following correctly assigns the value 5 to the third element of an array arr?

• A. arr[3] = 5;

• B. arr(2) = 5;

• C. arr[2] = 5;

• D. arr{3} = 5;

What is the correct way to initialize all elements of an array arr of size 10 to 0?

• A. int arr[10] = {0};

• B. int arr[10] = 0;

• C. int arr[10] = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0};

• D. Both A and C

How many elements can be stored in the array int arr[10];?

• A. 9

• B. 10

• C. 11

• D. None of the above

Which of the following statements about arrays in C is true?

• A. The size of an array is fixed after its declaration.

• B. The size of an array can be changed dynamically.

• C. Arrays can store elements of different types.

• D. Arrays can only store integer values.

What is the output of the following code? int arr[] = {10, 20, 30, 40, 50}; printf("%d", *(arr + 2));

• 10

• 20

• 30

• 40