Vista - Help with Functions and Variables

Sub ConvertTemp()
temp = InputBox("Please enter the temperature in degrees F.", 1)
MsgBox "The temperature is " & Celsius(temp) & " degrees C."
End Sub

Function Celsius(fDegrees)
Celsius = (fDegrees - 32) * 5 / 9
End Function

I read this posting on Microsoft's website explaining the Function
procedure. I do not see the point of using
the fDegrees argument. I thought an argument passes a variable to the
fucntion; yes, no?

"indytoatl" <indytoatl@xxxxxx> wrote in message
news:dc94aafc-8f7f-4d0a-9279-c7ac744e54be@xxxxxxPerhaps this expanded example will make it clearer:

Sub ConvertTemp()
temp = InputBox("Please enter the temperature in degrees F.", 1)
MsgBox "The temperature is " & Celsius(temp) & " degrees C."
End Sub

Sub ProcessTemp2()
iInlet = 55
iOutlet = 70
MsgBox "The inlet temperature is " & Celsius(iInlet) & " degrees C."
MsgBox "The outlet temperature is " & Celsius(iOutlet) & " degrees C."
End Sub

Function Celsius(fDegrees)
Celsius = (fDegrees - 32) * 5 / 9
End Function

How do you reuse the function return value without re-running the
function procedure?

Wscript.echo "Results = " & Celsius & "something equals = " & Celsius

Function Celsius(fDegrees)
Celsius = (fDegrees - 32) * 5 / 9
End Function

> How do you reuse the function return value without re-running theUsually you use a new variable:

CelsVal = Celsius(32)

Your example is "condensed", which makes it
potentially confusing. It could have been:

CelsVal = Celsius(temp)
MsgBox "The temperature is " & CelsVal & " degrees C."


In your example fDegrees is just the name of the
parameter (also sometimes called an argument).
You can have as many parameters as you want.
(The name is just descriptive.) A parameter can
also return information if desired. And you can often
use a sub instead if you prefer:

Temp = 32
Celsius Temp
Msgbox Temp ' returns 0

Sub Celsius(fDegrees)
fDegrees = (fDegrees - 32) * 5 / 9
End Sub

Hey, thanks for the info.
Now how do I use the returned function value without kicking off the
function again?
Thanks in advance!

' ************* Begin Script *********************
GetDrivePath
Wscript.echo GetDrivePath

' The statement above causes the Function to run again which is not
' what I'm trying to do. I just want to echo the path.

Function GetDrivePath
Set objFSO = CreateObject("Scripting.FileSystemObject")
GetDrivePath = objFSO.GetFolder("C:\temp")
End Fucntion

> Hey, thanks for the info.That's what the variable is for. I was trying
to point out that a return variable always goes
with a function. In the samples you're posting the
code is condensed and the return variable is only
implied. But it's still there. Whoever wrote the code
knew that they could get away with compressing
the whole thing into one line. For clarity it's maybe
better to make the return variable explicit:

'-- return result of GetDrivePath function in sPath variable:
sPath = GetDrivePath()
msgbox sPath

A function has a variable to the left of the
= sign. When it returns that variable is the
result of the function. The function returns a value.
A sub is the same thing; it just doesn't return a
value.

On Sep 25, 9:23*am, indytoatl <indyto...@xxxxxx> wrote:You need to apply what the mayayana told you, that is, store the
result in a variable and then use the variable instead of the function
call.

sFolderPath = GetDrivePath
Wscript.echo sFolderPath

Tha particular example you are using is actually a bad one, since the
GetFolder function that is invoked in your GetDrivePath function is
not being used in a 'best practice' way. Rather, it is returning the
path string only because it is the default property of the Folder
object that is actually returned. Rather, I would use it thus ...

set oFolder = GetDrivePath
Wscript.echo oFolder.Path

Function GetDrivePath
Set objFSO = CreateObject("Scripting.FileSystemObject")
set GetDrivePath = objFSO.GetFolder("C:\temp")
End Function

Then you can actually do what I think you are after - that is do
something with the files contained in the temp folder named in the
function, as in ...

for each ofile in oFolder.Files
wsh.echo oFile.name
next

Finally, do you have a copy of the WSH help docs - and maybe the
Technet Script Center's sample scripts? Check these links out ...

WSH 5.6 documentation download (URL all one line)
http://www.microsoft.com/downloads/d...displaylang=en

TechNet Script Center Sample Scripts (URL all one line)
http://www.microsoft.com/downloads/d...a-b8814fe2da5a

Tom Lavedas
===========
http://members.cox.net/tglbatch/wsh/

Thanks guys!!! It makes sense now. WOW ;-)