Invoking callable services from C

In C, invoke a Language Environment callable service (with feedback code) using the following syntax:

Figure 1. Sample invocation of a callable service from C

#include <leawi.h>
main ()
{
 CEESERV(parm1, parm2, ... parmn, fc);
 }

leawi.h is a header file shipped with Language Environment that contains declarations of Language Environment callable services and OMIT_FC, which is used to explicitly omit the feedback code parameter.

Figure 2. Omitting the feedback code when calling a service from C

#include <leawi.h>
main ()
{
 CEESERV(parm1, parm2, ... parmn, OMIT_FC);
 }