brainchime.com Latest Questions

Admin
Asked: 2024-10-10T11:42:17+05:30 In:

why do we use EXTPGM keyword in RPG program?

why do we use the EXTPGM keyword in the RPG program? Please provide the syntax of the EXTPGM keyword with some examples.

How does EXTPGM work when declaring an external program call in the RPGLE program?

as400rpg

Related Questions

Leave an answer

Leave an answer

Browse
Browse

Choose from here the video type.

Put Video ID here: https://www.youtube.com/watch?v=sdUUx5FdySs Ex: "sdUUx5FdySs".

1 Answer

  1. Admin

    The EXTPGM keyword is used to define the procedure prototype in the RPGLE program. Prototype informs the compiler of how the parameters are defined in the program or procedure. When we use the EXTPGM keyword, then the call will be an external program call that uses an external program object specified by the EXTPGM keyword. The call becomes a dynamic external call if the prototype contains the term EXTPGM keyword; otherwise, it is a bound procedure call.
    Example of using EXTPGM keyword:

    • A program without any parameters in its prototype. The program’s external name is “PGM1”.Defining EXTPGM keyword in RPG Fixed format
      D PGM1 PR EXTPGM('PGM1')Defining EXTPGM keyword in RPG

      fully free format:
      DCL-PR PGM1 EXTPGM;
      END-PR;

    • A parameter program prototype. Program ‘PGM1’ is its external name.Defining EXTPGM keyword in RPG Fixed format
      D PGM1 PR EXTPGM('PGM1')
      D PARM1 10A CONST

      Defining EXTPGM keyword in RPG fully free format:
      DCL-PR PGM1 EXTPGM;
      PARM1 CHAR(10) CONST;
      END-PR;