RE: C language

[Buck Calabro <buck.calabro@xxxxxxxxxxxxxxxxx>]

Mike Pantzopoulos wrote:

>I've managed to get an external DS 'seen' by my C 
>program by using the #pragma directive.
>The DS contains fields named XXXXX#. When the 
>program is compiled the fields end up being called 
>XXXXXp (lower case p). I presume this is because C 
>does not allow special characters in variable names. 
>When I reference the variable as XXXXXp, the compiler 
>says the variable must be declared before being used. 

I am not a C expert but I have done some work with C and DB2 files.  When
you say "external DS seen by my program" do you mean "DB2 file description?"
I have an example of a field named FIRE# in the database and I use FIREp
with no problem.  Are you qualifying the reference to your I/O struct?  

#pragma mapinc("master","BUCK/MASTER(RMASTER)","input lvlchk","_P d")
BUCK_MASTER_RMASTER_i_t ddsbuf;
printf("FIRE#= %s\n", ddsbuf.FIREp); 

>A second question........I want to be able to call 
>a program who's name will be held in a variable. 
>I've come across references on how to do it with the
>#PRAGMA directive, but only if the program name 
>is known at compile time.  I need  to be able to do 
>it dynamically at execution time.

I have not been able to do this.  My problem seems to be that I can't use
variables or #defines within the #pragma.  I think if I had to do it right
away I'd use system() and data queues for passing parameters between the
programs.

Buck Calabro
Aptis; Albany, NY
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