Add loop to vba code for excel - loops

Question

I know little about vba so I am hoping someone can help me.
I have the following code below, it "fill blank cells in column with value above" and works fine.
I need to use it on NON-contiguous coloumns.
Is there a way to add a loop to it so that it will run on [B D H I] columns?
I have tryed to puzzel this out have not got anywhere
Thanks
Sub FillColBlanks()
'by Dave Peterson 2004-01-06
'fill blank cells in column with value above
'http://www.contextures.com/xlDataEntry02.html
Dim wks As Worksheet
Dim rng As Range
Dim Lastrow As Long
Dim col As Long
Set wks = ActiveSheet
With wks
'col = ActiveCell.Column
'or
col = .Range("G2").Column
Set rng = .UsedRange 'try to reset the lastcell
Lastrow = .Cells.SpecialCells(xlCellTypeLastCell).Row
Set rng = Nothing
On Error Resume Next
Set rng = .Range(.Cells(2, col), .Cells(Lastrow, col)) _
.Cells.SpecialCells(xlCellTypeBlanks)
On Error GoTo 0
If rng Is Nothing Then
MsgBox "No blanks found"
Exit Sub
Else
rng.FormulaR1C1 = "=R[-1]C"
End If
'replace formulas with values
With .Cells(1, col).EntireColumn
.Value = .Value
End With
End With
End Sub

Answer 1

you could try the below:
Sub FillColBlanks(sColRange as string)
'by Dave Peterson 2004-01-06
'fill blank cells in column with value above
'http://www.contextures.com/xlDataEntry02.html
Dim wks As Worksheet
Dim rng As Range
Dim Lastrow As Long
Dim col As Long
Set wks = ActiveSheet
With wks
'col = ActiveCell.Column
'or
col = .Range(sColRange).Column
Set rng = .UsedRange 'try to reset the lastcell
Lastrow = .Cells.SpecialCells(xlCellTypeLastCell).Row
Set rng = Nothing
On Error Resume Next
Set rng = .Range(.Cells(2, col), .Cells(Lastrow, col)) _
.Cells.SpecialCells(xlCellTypeBlanks)
On Error GoTo 0
If rng Is Nothing Then
MsgBox "No blanks found"
Exit Sub
Else
rng.FormulaR1C1 = "=R[-1]C"
End If
'replace formulas with values
With .Cells(1, col).EntireColumn
.Value = .Value
End With
End With
End Sub
so you call that procedure like this:
Call FillColBlanks("B1")
Call FillColBlanks("D1")
Call FillColBlanks("H1")
Call FillColBlanks("I1")