IBM AS/400 Stepping Through the Program Object, Displaying a Field using the EVAL debug command

Stepping Through the Program Object

on the debug command line. Thefieldvariable-nameis the name of the field, dat structure, or array that you want to display or evaluate. The value message line if the EVAL debug command is entered from the Display Mod Source display and the value can be shown on a single line. Otherwise, on the Evaluate Expression display.

Figure 96 shows an example of using the EVAL debug command to display contents of a subfield LastName.

‡				Display Module Source			—
	Program:	DEBUGEX		Library:	MYLIB	Module:	DBGEX
61		D	LastName		10A	INZ('Jones	')
62		D	FirstName		10A	INZ('Fred	')
63

64*---------------------------------------------------------------

65* Define prototypes for called procedures c_proc and switc￿h

66*---------------------------------------------------------------

67	D c_proc		PR	*	EXTPROC('c_proc')
68	D	size		10U	0 VALUE
69	D	inzval		1A	CONST
70
71	D Switch		PR
72	D	Parm		1A
73

74*---------------------------------------------------------------

75* Define parameters for non-prototyped call

More...

Debug . . . eval LastName____________________________________________________

_______________________________________________________________________________

F3=End program

F6=Add/Clear breakpoint

F10=Step

F11=Display variable

F12=Resume

F17=Watch variable

F18=Work with watch

F24=More keys

ˆ LASTNAME = 'Jones

'

˜

Figure 96.

Displaying a Field using the EVAL debug command

Figure 97

on page 201 shows

the

use

of

the

EVAL

command

with

different

of RPG fields. The fields are based

on the

source

in Figure 105

on

Additional

examples are also

provided

in

the

source debugger

online

he

200 ILE RPG for AS/400 Programmer's Guide