29 - Modularization Techniques - Subroutines Part8

[@sVANAPALLISIVA]

can i use subrotine without paramters for this program ?

[@sapabapbyrahulmehta]

Hello - In this case, if you use subroutine without parameters, you need to create those many unique subroutines. Based upon current example - You need to go for 5 different subroutines. It's good to go for subroutine with parameters, as single subroutine with different parameters suffice the purpose.

[@sVANAPALLISIVA]

Thanks you​@@sapabapbyrahulmehta

[@AnupKumar-ng9tq]

in this subroutine lwa_data-ono and lwa_data-pm is inside the subroutine but we are neither defined by using or changing nor we have defined their type.

[@sapabapbyrahulmehta]

We declared the work area in the top of the program at the line no -14, so it is accessible in subroutine also.

[@bidiptachakraborty3613]

@@sapabapbyrahulmehta so it'll take that as a global declaration ? Can't we do the same for the internal table also ?

[@sapabapbyrahulmehta]

@@bidiptachakraborty3613 Yes you can.

[@romasingh6267]

@@sapabapbyrahulmehta But the work area type is local structure, how is it accessible in the subroutine?

[@sapabapbyrahulmehta]

@@romasingh6267 Hello Roma - Declaring a work area which refers to local structure does not make a work area local. It is a just a declaration. It can be through local structure or global structure. We declared the work area in the main program. It means it will be accessible in the other parts of the program(Including the code of the subroutine).

[@PURNASAI-q9x]

Hi Rahul, can we declare table type in the program and use that in subroutine for pt_data TYPE (table type declared in prg) instead of creating global structure and table type?

[@sapabapbyrahulmehta]

Yes you can create in the program as well. For Example - I created this Table type in the program and used in the CHANGING. TYPES : ltty_data TYPE TABLE OF lty_data. FORM get_header USING pt_ono TYPE ZTSTR_RANGE_ONO CHANGING pt_data TYPE ltty_data.

[@AvtanshDixit]

sir i tried creating table type ltty_data in the program itself and use it in subroutine for the internal table type but it showed error that "ltty_data is unknown", so should i declare ltty_data in subroutine itself or only global structure will work for formal parameters?

[@sapabapbyrahulmehta]

Hello Avtansh - You can declare LTTY_DATA in the program as well as with the help of global structure. The only thing is you are not activating everything together. Activate the program and the include together, it will work.

[@MrSrikanthboosa]

Rahul ji, If we write the work area instead of internal table in the changing parameter output is displaying.. Do We have to give internal table only at CHANGING (in perform) ???

[@sapabapbyrahulmehta]

It is not mandatory. If you think, only single record is there, we can directly take in work area as well.

[@dreamer9857]

Hello sir, i tried but there is no error for not specifying the internal table type. Im using version 7.9, will it be the reason. Code: Using pv_on type data_element Pv_pm type data_element Changing pt_data.

[@sapabapbyrahulmehta]

Hello, You have not written the logic in the subroutine, Write the logic and then system will understand, It is not an internal table.

[@dreamer9857]

@@sapabapbyrahulmehta oh got it sir.

[@rajameenasankar1851]

hi, can we use internal_table type standard_table?

[@sapabapbyrahulmehta]

Yes you can use, but in that case you need to use dynamic programming(Field-Symbols) to refer the fields of the internal table.

[@rajameenasankar1851]

@@sapabapbyrahulmehta okay, understood.. thanks 🙂