Test268 Section 3

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Section 3 - Core RPG (15%)

Recognize appropriate use of RPG creation commands (e.g., CRTxxxPGM, CRTxxxMOD, CRTPGM, CRTBNDxxx)

• CRTxxxPGM
  • Used for compiling a RPG ILE 4 program without the "NOMAIN" H-Spec
• CRTxxxMOD
  • Used for compiling a RPG ILE 4 program with the "NOMAIN" H-Spec
• CRTPGM
• CRTBNDxxx

Define basic arrays (e.g., compile time, pre-run time, run time) using D specs

• Compile Time

     DName+++++++++++ETDsFrom+++To/L+++IDc.Keywords++++++++++++++++++++
     DARC              S              3A   DIM(12) PERRCD(5) CTDATA

• • CTDATA ARC

48K16343J64044HComments can be placed here 12648A47349K346Comments can be placed here 50B125 Comments can be placed here

• Pre-Run Time

Figure 68 shows the definition specifications required for two prerun-time arrays, a compile-time array, and a run-time array. Figure 68. Definition Specifications for Different Types of Arrays

• ....+....1....+....2....+....3....+....4....+....5....+....6....+....*

     HKeywords+++++++++++++++++++++++++++++++++++++++++++++++++++++++++
     H DATFMT(*USA) TIMFMT(*HMS)
     D*ame+++++++++++ETDsFrom+++To/L+++IDc.Keywords++++++++++++++++++++
      * Run-time array.  ARI has 10 elements of type date. They are
      * initialized to September 15, 1994.  This is in month, day,
      * year format using a slash as a separator as defined on the
      * control specification.
     DARI              S               D   DIM(10) INZ(D'09/15/1994')
      *
      * Compile-time arrays in alternating format.  Both arrays have
      * eight elements (three elements per record).  ARC is a character
      * array of length 15, and ARD is a time array with a predefined
      * length of 8.
     DARC              S             15    DIM(8) PERRCD(3)
     D                                     CTDATA
     DARD              S               T   DIM(8) ALT(ARC)
      *
      * Prerun-time array.  ARE, which is to be read from file DISKIN,
      * has 250 character elements (12 elements per record).  Each
      * element is five positions long.  The size of each record
      * is 60 (5*12). The elements are arranged in ascending sequence.
     DARE              S              5A   DIM(250) PERRCD(12) ASCEND
     D                                     FROMFILE(DISKIN)
      *
      * Prerun-time array specified as a combined file.  ARH is written
      * back to the same file from which it is read when the program
      * ends normally with LR on.  ARH has 250  character elements
      * (12 elements per record).  Each elements is five positions long.
      * The elements are arranged in ascending sequence.
     DARH              S              5A   DIM(250) PERRCD(12) ASCEND
     D                                     FROMFILE(DISKOUT)
     D                                     TOFILE(DISKOUT)

• • CTDATA ARC

Toronto 12:15:00Winnipeg 13:23:00Calgary 15:44:00 Sydney 17:24:30Edmonton 21:33:00Saskatoon 08:40:00 Regina 12:33:00Vancouver 13:20:00

• Run Time

• ...1....+....2....+....3....+....4....+....5....+....6....+....7...

DName+++++++++++ETDsFrom+++To/L+++IDc.Keywords+++++++++++++++++++++++++++ DARC S 3A DIM(12)

Code and use figurative constants (e.g., *LOVAL, *HIVAL, *ALL, *BLANKS, *ZEROS, *ON, *OFF)

• *ALL
• *BLANKS
• *HIVAL
• *LOVAL
• *OFF
• *ON
• *ZEROS

Code and use SDS

See Program Status Data Structure

Code and use RPG IV built-in functions

See Built In Functions

Use the H-spec keywords

See H-Spec Keywords

Use the D-spec keywords

See D-Spec Keywords

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