1. IBC233 Lecture 3 Updated Fall 2011

2. Homework
Finish up Lab 2
Work on Lab 3

3. Agenda Review Edit Words The Printing Story Library Lists
Display Files
RPG

4. Edit Words Used to make numbers more readable Example
Your number is 01234
The default display is 1,234
You want it displayed as
Then the EDTWRD would be (‘0♪♪♪-♪♪‘)
(♪ means 1 blank space)

5. The Printing Story
Why is printing so darn difficult?
Printing at home

6. Playing with your Library List
ADDLIBLE – Add library List Entry
RMVLIBLE – Remove Library List Entry
EDTLIBL – Edit Library List
CHGLIBL – Change Library List
CHGCURLIB – Change Current Library

7. Display Files

8. Display Files File objects hold screen design constants or literals
system constants (date, time, user)
fields

9. Display Files and Programs
MARKSDSP
*FILE
MARKSRPG
*PGM

10. Demo

11. Report Program Generator
RPG
Report Program Generator

12. Indicators Boolean variables – predfined Have the values:
*IN00 - *IN24 function keys
*INLR – last record indicator
How we end RPG programs
Have the values:
‘0’ or *OFF
‘1’ or *ON

13. F-spec How we define files File Type: I/U/C File Designation: F/P
File Addition: A or blank
File Format: E or F
Record Address Type: K or Blank
Device: Disk/Printer/Workstn

14. EXFMT
Displays a screen and waits for input
eg. EXFMT RECORD1;

15. WRITE
Writes a record format to a file

16. Loops - DOU
dou X > 10; Total = Total + Array(x); X = X + 1; enddo;

17. Loops – DOW
dow (a <= 5) and (b + c = 0); exsr nextRecord; enddo;

18. Subroutines Blocks of logic Execute a subroutine – EXSR
Define a subroutine
BEGSR subName;
ENDSR;

19. IF Statements
IF condition; ELSE; ENDIF’

20. Select Statements
SELECT; WHEN condition; statements; OTHER; ENDSL;