Explain how Multidimensional Arrays are used in a Visual Basic application?

Answer 1

Creating a Visual Basic Multidimensional Array Declaring a multidimensional array requires both the number of rows and columns to be defined when the array is created. As with standard arrays, multidimensional arrays are declared using the Dimkeyword: Dim strBooks(4, 2) As String The above Visual Basic code excerpt creates a two dimensional String array of 5 rows and 2 columns. Assigning Values to Multidimensional Array Values are assigned to array elements by specifying the index into each dimension. For example, in a two dimensional array, 0, 0 will references the element in the first column of the first row of the array. The following code initializes each element of our array: Dim strBooks(4, 1) As String strBooks (0, 0) = "Learning Visual Basic" strBooks (0, 1) = "John Smith" strBooks (1, 0) = "Visual Basic in 1 Week" strBooks (1, 1) = "Bill White" strBooks (2, 0) = "Everything about Visual Basic" strBooks (2, 1) = "Mary Green" strBooks (3, 0) = "Programming Made Easy" strBooks (3, 1) = "Mark Wilson" strBooks (4, 0) = "Visual Basic 101" strBooks (4, 1) = "Alan Woods" The above example creates a two dimensional array of 5 rows (remember that indexing starts at 0 so this array have elements from 0 to 4 inclusive) and two columns. Column 1 is the book title and column 2 the author.

Answerer 1 Multidimensional arrays are used as follows:-

Dim a(m,n) as integer

for putting value

for i = 1 to m

for j = 1 to n

a(i , j) = val(inputbox("Enter the value"))

s = s & a(i , j) & " "

next j

s = s & vbcrlf

next i