Splitter Tool VBA Code

Sub columntosheets()
Dim WBtoSplit As Workbook
Dim FileOpen As Variant
Dim s As Variant

FileOpen = Application.GetOpenFilename("Excel-files,*", _
1, "Select File To Open", , False)
If TypeName(FileOpen) = "Boolean" Then Exit Sub
Workbooks.Open FileOpen
Set WBtoSplit = ActiveWorkbook

sname = InputBox("Please identify the name of the worksheet you wish to split.", , "Sheet1")
s = InputBox("Please state which column to split by.")
Dim d As Object, a, cc&
Dim p&, i&, rws&, cls&
Set d = CreateObject("scripting.dictionary")
With Sheets(sname)
rws = .Cells.Find("*", , , , xlByRows, xlPrevious).Row
cls = .Cells.Find("*", , , , xlByColumns, xlPrevious).Column
cc = .Columns(s).Column
End With
For Each sh In Worksheets
d(sh.Name) = 1
Next sh

Application.ScreenUpdating = False
With Sheets.Add(after:=Sheets(sname))
Sheets(sname).Cells(1).Resize(rws, cls).Copy .Cells(1)
.Cells(1).Resize(rws, cls).Sort .Cells(cc), 2, Header:=xlYes
a = .Cells(cc).Resize(rws + 1, 1)
p = 2
For i = 2 To rws + 1
If a(i, 1) <> a(p, 1) Then
If d(a(p, 1)) <> 1 Then
Sheets.Add.Name = a(p, 1)
.Cells(1).Resize(, cls).Copy Cells(1)
.Cells(p, 1).Resize(i - p, cls).Copy Cells(2, 1)
End If
p = i
End If
Next i
Application.DisplayAlerts = False
.Delete
Application.DisplayAlerts = True
Application.ScreenUpdating = True
End With
Sheets(sname).Activate
MsgBox "Splitter completed."
End Sub