SYD
返回一个Double值，指定资产在指定期间的年数总和折旧额。
语法：SYD( cost, salvage, life, period )
- cost
- 必需 Double，指定资产的初始成本。
- salvage
- 必需 Double，指定资产在使用寿命结束时的价值。
- life
- 必需 Double，指定资产使用寿命的长度。
- period
- 必需 Double，指定计算资产折旧的期间。
life和period参数必须以相同的单位表示。例如，如果life以月为单位，period也必须以月为单位。所有参数必须为正数。
示例
本示例使用SYD函数返回资产在指定期间的折旧额，提供的参数包括：资产的初始成本(InitCost)、资产使用寿命结束时的残值(SalvageVal)以及资产的总寿命年数(LifeTime)。计算折旧的期间年数为PDepr。
vb
Dim Fmt, InitCost, SalvageVal, MonthLife, LifeTime, DepYear, PDepr
Const YEARMONTHS = 12 ' Number of months in a year.
Fmt = "###,##0.00" ' Define money format.
InitCost = InputBox("What's the initial cost of the asset?")
SalvageVal = InputBox("What's the asset's value at the end of its life?")
MonthLife = InputBox("What's the asset's useful life in months?")
Do While MonthLife < YEARMONTHS ' Ensure period is >= 1 year.
MsgBox "Asset life must be a year or more."
MonthLife = InputBox("What's the asset's useful life in months?")
Loop
LifeTime = MonthLife / YEARMONTHS ' Convert months to years.
If LifeTime <> Int(MonthLife / YEARMONTHS) Then
LifeTime = Int(LifeTime + 1) ' Round up to nearest year.
End If
DepYear = CInt(InputBox("For which year do you want depreciation?"))
Do While DepYear < 1 Or DepYear > LifeTime
MsgBox "You must enter at least 1 but not more than " & LifeTime
DepYear = CInt(InputBox("For what year do you want depreciation?"))
Loop
PDepr = SYD(InitCost, SalvageVal, LifeTime, DepYear)
MsgBox "The depreciation for year " & DepYear & " is " & Format(PDepr, Fmt) & "."