Re: Unmatch variable

[Mike Apice <mapice3284@xxxxxxxxx>]

Great explaination Jon.

Jon Paris <Jon.Paris@xxxxxxxxxxxxxx> wrote:  
On 6-May-08, at 5:23 AM, Riyadi, Agus wrote:

> So, it is like if we define as character. Because program A will 
> receive the
> data justify left, even we define as numeric.
>
> Thank's a lots for your help.

You still seem to be missing the point. The program does not 
"receive the data". Only a pointer to the data. The _only_ 
information the called program receives about the parameter is where 
it starts in memory. Period - end of story. Nothing about its size 
or data type or anything else.

Consequently interpretation of the data is _entirely_ based on the 
definition in the called program.

Note that all processing of the parameter within the called program, 
actually happens in the memory "owned" by the calling program - that 
is why it is critical to match the definitions in order to avoid 
corrupting memory.

Again this is not a COBOL thing or an AS/400 thing - it occurs with 
any language that passes parameters by reference which includes (for 
example) the C language.

Jon Paris

www.Partner400.com
www.SystemiDeveloper.com