ASSESSMENT | ARRAY

In C#, an array is:

• A collection of values of the same type stored in consecutive memory locations.

• A collection of values of different types stored together.

• A method for repeating tasks.

• A keyword used for sorting values.

Which of the following is NOT true about arrays?

• Array elements are accessed using an index.

• The index of the first element starts at 0.

• Arrays can store different data types in one collection.

• Arrays have a fixed size once declared.

Which is a valid declaration of an integer array with 5 elements in C#?

• int[] nums = new int[5];

• int nums = {1, 2, 3, 4, 5};

• array nums[5];

• int nums = new int(5);

Given int[] numbers = {10, 20, 30, 40};, what will numbers[0] return?

• 10

• 20

• 30

• 40

Which of the following correctly initializes a string array?

• string fruits = {"Apple", "Banana", "Mango"};

• string[] fruits = {"Apple", "Banana", "Mango"};

• fruits string[] = {"Apple", "Banana", "Mango"};

• array fruits = {"Apple", "Banana", "Mango"};

If an array is declared as int[] arr = new int[3];, what are the default values of its elements?

• null

• 1

• 0

• undefined

Which property is used to determine the number of elements in an array?

• Count

• Length

• Size

• Capacity

What will the following code output?

• 15

• 20

• 25

• 30

Which loop is most commonly used to access all elements of an array when the size is known?

• if

• for

• while

• switch

Which of the following is TRUE about arrays in C#?

• Arrays automatically resize when new elements are added.

• All elements in an array must be of the same data type.

• Arrays can store both integers and strings together.

• The last index of an array is equal to its Length.