hi. i am having problems in showing the output of my matrix multiplication. my output is suppose to be like this:
 

-1  -1  1  -1

1   1  -1   1

-1  -1   1  -1

1   1    -1  1

-1  -1    1   -1
 

but somehow the output that was shown in my graphic user interface is only -1. i do not know what is the problem .

Private Sub Calculate_Click()

Dim Str1 As String
Dim Str2 As String
Dim Str3 As String


Const X As Integer = 5

Const Y As Integer = 1

Dim matrix1(X - 1, Y - 1) As Integer
matrix1(0, 0) = 0
matrix1(1, 0) = 1
matrix1(2, 0) = 0
matrix1(3, 0) = 1
matrix1(4, 0) = 0


Const M As Integer = 1
Const N As Integer = 4

Dim matrix2(M - 1, N - 1) As Integer
matrix2(0, 0) = 1
matrix2(0, 1) = 1
matrix2(0, 2) = 0
matrix2(0, 3) = 1

For j = 0 To (Y - 1)
    For i = 0 To (X - 1)
        If matrix1(i, j) = 0 Then
            matrix1(i, j) = -1
        End If
    Next i
Next j

For f = 0 To (N - 1)
    For e = 0 To (M - 1)
        If matrix2(e, f) = 0 Then
            matrix2(e, f) = -1
        End If
    Next e
Next f

Dim matrix3(X - 1, N - 1) As Integer
Dim i2 As Integer
Dim f2 As Integer


For j = 0 To (Y - 1)
    For e = 0 To (M - 1)
        For i = 0 To (X - 1)
            For f = 0 To (N - 1)
              
                matrix3(i2, f2) = matrix1(i, j) * matrix2(e, f)
              
               
              

            Next f
           
         Next i
       

   Next e
Next j

 Str1 = (" " & matrix3(i2, f2))
 lbloutput1.Caption = (Str1)


           
End Sub

 

 Probably beacuse variables i2 and f2 are never assigned a value and therefore will always be zero.

 This means that you will only ever store or produce the value of your matrix array at Matrix3(0,0)