Macro Definition.

[Former Member]

What does the Ampersand-2 and 1(&2 and &1 ) contain in this code?

DEFINE DBG.

IF DEBUGFLG = 'Y' OR DEBUGFLG = 'y'.

IF &2 NE SPACE.

WRITE: / &1, &2.

ELSE.

WRITE: / &1.

ENDIF.

ENDIF.

END-OF-DEFINITION

[Former Member]

It's the placeholder for the parameters you pass to the macro.

Example.

DBG 'value 1' ' value 2'.

&1 will get the value ' value 1' and &2 gets 'value 2'

[Former Member]

Hi,

I cant clearly get you,

could you elaborate in detail....

[Former Member]

Its the placeholders for your parameter you pass while calling the MACRO.

For example if you call a macro as;

MACRO1 var1 var2.....

Then here the var1 will be passed to &1, var2 passed to &2 and so on.

Got it?

Regards

Karthik D

[Mohamed_Mukhtar]

hi ,

Ampersign are place holders . In a macro , maximum of 9 place holders can be used.

Advantage is reusability

for example

DATA : a TYPE i,
       b TYPE i,
       c TYPE i.
DEFINE mac1.
  a = &1.
  b = &2.
  c = a &3 b.
  write : / c.
END-OF-DEFINITION.

mac1 2 3 +. " this is for addition
mac1 2 3 *. " this is for multiplication
mac1 6 2 /. " this is for division
mac1 4 2 -. " this is for substraction

Thanks & Regards

[Former Member]

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