Sub BobJazz()
Dim Plage As Range, Cell As Range
With Feuil1
Set Plage = .Range(.Range('A1'), .Range('A65536').End(xlUp))
End With
For Each Cell In Plage
Cell.Offset(0, 2) = Cell & Chr(10) & Cell.Offset(0, 1) & Chr(10) & Cell.Offset(0, 2)
Next Cell
End Sub