At which situation we need to use the push and pop conditions...pls tell me wi

At which situation we need to use the push and pop
conditions...pls tell me with exampls.

Question Posted / sivachennai

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At which situation we need to use the push and pop conditions...pls tell me with exampls...

If one programe call the any subprogram within it. Then in
SUB program we use PUSH command to sustained all the Handle
conditions of main program, and before the control giving
back to main program we use POP command to reactivate all
the sustained Handle conditions of Main program.

Use of PUSH and POP conditions is to sustained all the
Handle error conditions in Subprog.

Exaples :- Prog A

EXEC SEND....END-EXEC
EXEC HANDLE LENGERR(LABEL1)...
EXEC RECIVE..END EXEC.

CALL PROG B
EXEC SEND....END-EXEC

Prog B
EXEC PUSH
EXEC HANDLE
EXEC POP
EXEC SEND ..
EXEC RETRUN.

in the above exp, when the control comes to at prog B then
all the HANDLES error condtions of Prog A in sustained
using PUSH condition and before control giving back to prog
A all the sustaineded handle error conditons are activated
using the POP condition.

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At which situation we need to use the push and pop conditions...pls tell me with exampls...

Answer / narender pathi

Above answer is correct. However we can use PUSH and POP with in the same program as well.

Regards,
Narender Pathi
Broadridge, Hyderabad

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