我的 Excel VBA DateDiff 计算正在截断答案如何获得更准确的答案？

编程问答 2022-12-09

问题描述

我正在尝试计算以周为单位的日期差异。我实际上想要一个最接近小数点后 10 位 (0.0) 的答案。计算正在截断或四舍五入我的结果。如何获得更准确的答案？代码如下

Option Explicit


Sub DateTesting()

Dim Date1 As Date

Dim Date2 As Date

Dim DaysDiffer As Long

Dim WeeksDiffer As Long



Date1 = "1/10/2021"

Date2 = "7/14/2021"


DaysDiffer = DateDiff("d",Date1,Date2)

MsgBox DaysDiffer               

'185 is the result


WeeksDiffer = DaysDiffer / 7        

' 185/7= 26.4285


MsgBox WeeksDiffer      

' 26 is the result

'  Why am I getting a truncated integer value for the calculation of Weeks???

End Sub

解决方法

以下是获取四舍五入的小数周的方法：

Sub DateTesting()

    Dim Date1       As Date
    Dim Date2       As Date

    Dim DaysDiffer  As Long
    Dim WeeksDiffer As Double

    Date1 = #1/10/2021#
    Date2 = #7/14/2021#

    DaysDiffer = DateDiff("d",Date1,Date2)

    MsgBox DaysDiffer               
    ' 185 is the result

    WeeksDiffer = DaysDiffer / 7        
    ' 26.4285714285714 is the result

    MsgBox Format(WeeksDiffer,"0.0")
    ' 26.4 is the rounded result

End Sub

有关各种日期处理，请参阅 VBA.Date。

关于高精度四舍五入，请参见VBA.Round。

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