DS - Chapter 3 - Arrays

If an array is declared as arr[] = {1,3,5,7,9}; then what is the value of sizeof(arr[3])?

• 1

• 2

• 3

• 8

If an array is declared as arr[] = {1,3,5,7,9}; then what is the value of arr[3]?

• 1

• 7

• 9

• 5

If an array is declared as double arr[50]; how many bytes will be allocated to it?

• 50

• 100

• 200

• 400

If an array is declared as int arr[50], how many elements can it hold?

• 49

• 50

• 51

• 0

If an array is declared as int arr[5][5], how many elements can it store?

• 5

• 25

• 10

• 0

Given an integer array arr[]; the ith element can be accessed by writing

• *(arr+i)

• *(i+arr)

• arr[i]

• All of these

An array is used to refer multiple memory locations having the same name.

• True

• False

An array name can be used as a pointer.

• True

• False

A loop is used to access all the elements of an array.

• True

• False

An array stores all its data elements in non-consecutive memory locations.

• True

• False