ここ3単純化のために(最初のよりシンプル最後ビーイング)で、可能なコード(他の多くのうち):
Option Explicit
Sub Cleanup()
Dim Segment As String
Dim i As Integer
For i = 6 To 10
Segment = Cells(i, 3).Value '<== Cells(i, 3) is the current cell as per the current row (i)
If Mid(Segment, 6, 1) = "/" Then
Cells(i, 3).Value = Left(Segment, 5)
Else
Cells(i, 3).Value = Left(Segment, 6)
End If
Next i
End Sub
Sub Cleanup2()
Dim i As Integer
For i = 6 To 10
With Cells(i, 3) 'avoid repetitions (and a variable, too) by using 'With' keyword and implying 'Cells(i, 3)' preceeds every dot (".") till next 'End With" statement
If Right(Left(.Value, 6), 1) = "/" Then
.Value = Left(.Value, 5)
Else
.Value = Left(.Value, 6)
End If
End With
Next i
End Sub
Sub Cleanup3()
Dim i As Integer
For i = 6 To 10
With Cells(i, 3)
.Value = Left(.Value, IIf(Mid(.Value, 6, 1) = "/", 5, 6)) ' use Iif function to avoid multiple lines. Also use 'Mid' function in lieu of 'Right(Left(..))'
End With
Next i
End Sub
変更 'ActiveCell'に' Cells'。 – Ambie