What is the difference between CANCEL and INITIAL statement

[vjrithwik]

Hi,

What is difference between CANCEL and INITIAL statements.
_________________
Regards,
Rithwik

"To learn to read is to light a fire; every syllable that is spelled out is a spark?

[Krishna]

Hi Rithwik,

CANCEL is used to initialize the sub-program. INITIAL is used to initialise the same program.
More information.........

CANCEL statement.
-----------------------

The CANCEL statement ensures that the next time the referenced subprogram is
called it will be entered in its initial state.

When a CANCEL statement is executed, all programs contained within the program referenced
by the CANCEL statement are also canceled.

A program can, however, cancel a program that it did not call, providing that,
in the calling hierarchy, it is higher than or equal to the program it is canceling.
For example:

A calls B and B calls C (When A receives control, it can cancel C.)

A calls B and A calls C (When C receives control, it can cancel B.)



NOTE : No action is taken when a CANCEL statement is executed, if subprogram has not been dynamically called.



INITIAL Statement
-----------------------

Specifies that when program-name is called, program-name and any programs contained
within it are placed in their initial state. The INITIAL attribute is not supported for programs
compiled with the THREAD option.

INITIAL statement is used with PROGRAM-ID statement.




Thanks,
Krishna

[gmt360]

Sorry for replying to an older post.
If not valid pls let me know, however it is related.

Do we use IS INITIAL in sub-program only?

Dynamically called programs are always in Initial Mode, Is it automatic or do we need to Code IS INITIAL or CANCEL?/

Pls reply

thanks

Garry

[dbzTHEdinosauer]

[dbzTHEdinosauer]