ARRAYS

What is an Array?

• A group of elements of same data type.

• An array contains more than one element

• Array elements are stored in memory in continuous or contiguous locations.

• All the above.

In general, the index of the first element in an array is __________

• 0

• -1

• 2

• 1

What is meaning of following

declaration ?

int arr[20];

• Array of size 20 that can have integer address

• Array of Size 20

• Integer Array of size 20

• None of these

Assuming int is of 2 bytes, what is the size of int arr[15];?

• 15

• 19

• 11

• 30

What is the output of the following piece of code?

int arr[]= {1,2,3,4,5};

cout<<arr[2];

cout<<arr[4];

• 3 and 5

• 5 and 3

• 2 and 4

• 4 and 2

How do you initialize an array in C++?

• int arr[3] = (1,2,3);

• int arr(3) = {1,2,3};

• int arr[3] = {1,2,3};

• int arr(3) = (1,2,3);

Elements in an array are accessed _____________

• randomly

• sequentially

• exponentially

• logarithmically

Choose a correct array statement.

• An array size can not changed once it is created.

• Array element value can be changed any number of times

• To access Nth element of an array students, use students[n-1] as the starting index is 0.

• All the above

What is the length of the following array: int data[] = { 12, 34, 9, 0, -62, 88 };

• 1

• 5

• 6

• 12

If we have declared an array described below -

int arr[6];

then which of the following array element is considered as last array element ?

• arr[6]

• arr[4]

• arr[0]

• arr[5]