How does CONSTANTS in a subroutine differs from STATICS variables

[Former Member]

How does CONSTANTS in a subroutine differs from STATICS variables in a subroutine

[Former Member]

How does CONSTANTS in a subroutine differs from STATICS variables in a subroutine

[Former Member]

Hi,

in simple words statics is used declare variable inside a sub-routine whose life dosen't end when the subroutine ends..

the foll code will explain more......

data f value 1.
PERFORM hello.
f = 2.
PERFORM hello.

FORM hello.
  DATA    a(30).
  STATICS b(30).
  if f = 1.
  move : 'local bcoz  declared as data' to a,
         'global bcoz declared as static' to b.
  else.
  write /.
  endif.
  write: / 'call no = ',f,'     a = ',a,'b = ',b.
ENDFORM.

Cheers,

jose.

Edited by: jose on Feb 9, 2008 7:34 AM

[Former Member]

Hi I do not have a system now could you give me the output- pls

[Former Member]

output

call no =  1      a =  local bcoz  declared as data   b =  global bcoz declared as static

call no =  2      a =                                 b =  global bcoz declared as static

.

in the second call variable a(declared as data) got initialized but variable b(declared as statics) has the previous value

Cheers,

jose.

[Former Member]

thanks jose points will follow do not worry I am just waiting for more answers

[Former Member]

Hi,

example given in SAP Keyword hlp.

DO 10 TIMES. 
  PERFORM add_one. 
ENDDO. 

FORM add_one. 
  DATA    local  TYPE i VALUE 0. 
  STATICS static TYPE i VALUE 0. 
  local  = local  + 1. 
  static = static + 1. 
  WRITE: / local, static. 
ENDFORM.

output

         1           1
         1           2
         1           3
         1           4
         1           5
         1           6
         1           7
         1           8
         1           9
         1          10

[Former Member]

great help indeed

2 eg.,s r good

abaper.learner