VB.Net Programs

VB.Net program to print the left diagonal of Matrix

By Nidhi Last Updated : November 16, 2024

Printing the left diagonal of Matrix

Here, we will read a 3X3 matrix from the user then print the left diagonal of MATRIX on the console screen.

Program/Source Code:

The source code to print the left diagonal of Matrix is given below. The given program is compiled and executed successfully.

VB.Net code to print the left diagonal of Matrix

'VB.Net program to print the left diagonal of the MATRIX.

Module Module1

    Sub Main()
        Dim arr(,) As Integer = New Integer(3, 3) {}

        Console.WriteLine("Enter Matrix elements: ")
        For i = 0 To 2 Step 1
            For j = 0 To 2 Step 1
                Console.Write("Enter element[{0}][{1}]: ", i, j)
                arr(i, j) = Integer.Parse(Console.ReadLine())
            Next
        Next

        Console.WriteLine("Matrix: ")
        For i = 0 To 2 Step 1
            For j = 0 To 2 Step 1
                Console.Write("{0} ", arr(i, j))
            Next
            Console.WriteLine()
        Next

        Console.WriteLine("Left Diagonal of Matrix: ")
        For i = 0 To 2 Step 1
            For j = 0 To 2 Step 1
                If (i = j) Then
                    Console.Write("{0} ", arr(i, j))
                Else
                    Console.Write("  ")
                End If
            Next
            Console.WriteLine()
        Next
    End Sub
    
End Module

Output

Enter Matrix elements:
Enter element[0][0]: 10
Enter element[0][1]: 20
Enter element[0][2]: 30
Enter element[1][0]: 40
Enter element[1][1]: 50
Enter element[1][2]: 60
Enter element[2][0]: 70
Enter element[2][1]: 80
Enter element[2][2]: 90
Matrix:
10 20 30
40 50 60
70 80 90
Left Diagonal of Matrix:
10
    50
       90
Press any key to continue . . .

Explanation

In the above program, we created a module Module1 that contains a function Main(). In the Main() function, we created a two-dimensional array of size 2X3.

Console.WriteLine("Enter Matrix elements: ")
For i = 0 To 1 Step 1
    For j = 0 To 2 Step 1
        Console.Write("Enter element[{0}][{1}]: ", i, j)
        arr(i, j) = Integer.Parse(Console.ReadLine())
    Next
Next

In the above code, we read the elements of the matrix from the user, here the outer loop represents the rows of the matrix and the inner loop is used to represent columns of the matrix.

Console.WriteLine("Matrix: ")
For i = 0 To 2 Step 1
    For j = 0 To 2 Step 1
        Console.Write("{0} ", arr(i, j))
    Next
    Console.WriteLine()
Next

Console.WriteLine("Left Diagonal of Matrix: ")
For i = 0 To 2 Step 1
    For j = 0 To 2 Step 1
        If (i = j) Then
            Console.Write("{0} ", arr(i, j))
        Else
            Console.Write("  ")
        End If
    Next
    Console.WriteLine()
Next

In the above code, we printed the MATRIX and left diagonal MATRIX on the console screen.