Re: Reading Pipe - ASCII -> EBCDIC Conversion

[Barbara Morris <bmorris@xxxxxxxxxx>]

BMay@xxxxxxxxx wrote:
> Barbara,
>
> Perhaps I'm wrong, but your second example doesn't make sense to me.
>
> "* value: a pointer passed by value.  If the called procedure changes the 
> parameter, the caller will not see the change."
>
> I always thought that this would mean the calling program would not see a 
> change to the actual POINTER.  However, if the value in memory that the 
> pointer is pointing to changed, that would be reflected in the calling 
> program.

Brian, you're right about the data the pointer is pointing to.

But in this case, the parameter _is_ a pointer.  I wasn't talking about 
what the pointer is pointing to, I was talking about the pointer itself.

(That's what I meant about it's being difficult to understand the 
difference between the parameter-passing modes when talking about 
pointer parameters.  When you have the "pointer" concept being used for 
the mechanism of passing the parameter _and_ for the parameter type 
itself, it can be confusing.)