Topic 5.3.4: Arrays

Array memory Allocation

  • An array stores a fixed-size sequential collection of elements of the same type.
  • An array is used to store a collection of data, but we can also think an array is a collection of variables of the same type.
  • All arrays consist of contiguous memory locations.
  • The lowest address corresponds to the first element and the highest address to the last element.

Array Declaration

  •  To declare an array in VB.Net, you use the Dim statement.

Example:

Dim intData(30)   ' an array of 31 elements

Dim strData(20) As String ' an array of 21 strings

  • We can also initialize the array elements while declaring the array.

Example:

Dim intData() As Integer = {12, 16, 20, 24, 28, 32}

Dim names() As String = { "Karthik", "Sandhya","Shivangi", "Ashwitha", "Somnath" }

Array Example

  • The elements in an array can be stored and accessed by using the index of the array.

Example:

Dim n(10) As Integer       ' n is an array of 11 integers '

Dim i, j As Integer      

For i = 0 To 10

n(i) = i + 100         ' set element at location i to i + 100 

Next i

For j = 0 To 10

Console.WriteLine("Element({0}) = {1}", j, n(j))

Next j

Last modified: Wednesday, 1 April 2020, 3:48 PM