IBM Mainframe Forum

by **NEWBSTER** » Wed May 08, 2013 2:27 pm

Hello,
I am trying to run a COBOL program I made to add two numbers that are input by user, then display the result. I cannot get it to run in the foreground I guess you would say. So it sits waiting and I have to go to SDSF input queue to see that it is waiting on "enter first number", then go to SDSF system requests and type "R (num)", then go back to input queue to see it wants another number, then back to SR and type "R (num)", then I can finally go to Output queue to see it say "the answer is (num)". Below is my JCL and then my COBOL program any help would be greatly appreciated.

JCL:

Select all

000001 //KCO3B97 JOB TESTJCL
000002 //STEP1 EXEC IGYWCLG
000003 //COBOL.SYSIN DD DSN=KC03B97.FILES.COBOL(TEST1),DISP=SHR
000004 //SYSPRINT DD SYSOUT=*
000005 //

COBOL:

Select all

000100 000100 IDENTIFICATION DIVISION.
000200 000200 PROGRAM-ID. TEST1.
000300 000300 ENVIRONMENT DIVISION.
000310 000310 SPECIAL-NAMES.
000320 000320 CONSOLE IS KEYBOARD.
000400 000400 DATA DIVISION.
000600 000600 WORKING-STORAGE SECTION.
000800 000800 01 NUM1 PICTURE IS 99.
000900 000900 01 NUM2 PICTURE IS 99.
001000 001000 01 ANSWER PICTURE IS 999.
001300 001300
001310 001310 PROCEDURE DIVISION.
001400 001400 PROGRAM-BEGIN.
001500 001500
001600 001600 DISPLAY "ENTER THE FIRST NUMBER :" UPON CONSOLE.
001800 001800 ACCEPT NUM1 FROM KEYBOARD.
001900 001900
002000 002000 DISPLAY "ENTER THE SECOND NUMBER :" UPON CONSOLE.
002300 002300 ACCEPT NUM2 FROM KEYBOARD.
002400 002400
002500 002500 COMPUTE ANSWER = NUM1 + NUM2.
002600 002600 DISPLAY "THE ANSWER EQUALS : " UPON CONSOLE.
002700 002700 DISPLAY ANSWER UPON CONSOLE.
002900 002900 PROGRAM-DONE.
003000 003000 STOP RUN.

by **enrico-sorichetti** » Wed May 08, 2013 2:35 pm

instead of ACCEPT using the console use ACCEPT from SYSIN
and a plain DISPLAY will <display> things on sys print

serach the forum and You will find quite a few examples.

by **Anuj Dhawan** » Wed May 08, 2013 4:30 pm

Are you allowed to use "UPON CONSOLE" at your shop? Or you're practicing at mainframe of some Coaching Institute?

And if you really want a 'prompt' for end-user, try CICS and/or IMS DC -- COBOL batch programming is, well, for Batch.

by **BillyBoyo** » Wed May 08, 2013 4:40 pm

Yes, as Anuj indicates, you should not use CONSOLE.

If there is a "user" who is entering values, that user is going to be sitting in front of a CICS or IMS DC "program", which can be written in Cobol.

If you want to do some practice, using ACCEPT, don't use "FROM", as the default is SYSIN. Just plain

Select all

ACCEPT data-name

In your JCL, have your data like this:

Select all

//SYSIN DD *
01
02

Simply DISPLAY the output required. Don't use UPON CONSOLE.

Select all

DISPLAY "This is some text " data-name

By default DISPLAY output goes to the SYSOUT DD. I'd expect there to be one in the PROC which you are executing from your JCL. The SYSPRINT DD is for the Cobol listing output.

by **NEWBSTER** » Wed May 08, 2013 7:25 pm

I had ACCEPT NUM1 before didn't use any FROM statements or UPON statements for ACCEPT or DISPLAY but it was not prompting me on the screen.

Yes if I put the numbers to be entered in the JCL it would run but that sort of negates the whole purpose for the "Enter the First number" display message because you would already have to know what it said to run the JCL....

I am trying to approach this as someone running this and not knowing what the requested data is. And this is for a project at college and I am a beginner. I just submitted the simple project as is but am still curious if I can get this to run in the foreground and say

Enter the first number:
(wait for reponse) 15
Enter the second number:
(wait for response) 25
The Answer equals: 040

And yes, I realize COBOL was not the proper language to do this in a real life situation, but we had to do a simple program that we thought up ourselves and we had to do proposals way before we knew anything about zOS at all so I was stuck with it. Anyway... can it be run and displayed in real time?

by **BillyBoyo** » Wed May 08, 2013 7:48 pm

COBOL is a proper language to do it in.

It is just that, when running on a Mainframe, "interaction" is done through CICS or IMS DC or you might try running your program under TSO.

You will never write a program like that (which ACCEPT/DISPLAY to do the "work") for a user on a Mainframe.

If you want to do it on a PC, download OpenCobol and compile your program with that.

by **Robert Sample** » Wed May 08, 2013 9:34 pm

Anyway... can it be run and displayed in real time?

A mainframe screen is NOT interactive. You may type as many characters as you want on a mainframe screen, but the system will not look at the first character until you hit an appropriate key (such as enter, or PF key, or clear, etc). Hence what you want to do -- real-time processing -- is not at all possible on a mainframe.

However, what I think you want to do is interactively execute the program. This can be done via TSO/E; once compiled, you allocate SYSIN and SYSOUT to your terminal and then invoke the program. When you do that, the TSO/E screen will have your prompt and you can type your response (remembering, of course, to match the COBOL data definition so if you want a 3-digit number input that is defined as PIC 9(3) then you have to enter 001 instead of just 1) on the terminal. The specific details on how to do this are dependent upon your site, so you would be best off talking to your site support group about it.

Select all

WORKING-STORAGE SECTION.
01 VAR1 PIC 9(3).
01 VAR2 PIC 9(3).
01 VAR3 PIC 9(3).
PROCEDURE DIVISION.
DISPLAY 'ENTER YOUR FIRST 3-DIGIT NUMBER'.
ACCEPT VAR1.
DISPLAY 'ENTER YOUR SECOND 3-DIGIT NUMBER'.
ACCEPT VAR2.
COMPUTE VAR3 = VAR1 + VAR2.
DISPLAY VAR1 ' + ' VAR2 ' = ' VAR3.
GOBACK.

produces

Select all

ENTER YOUR FIRST 3-DIGIT NUMBER
003
ENTER YOUR SECOND 3-DIGIT NUMBER
018
003 + 018 = 021
***

by **NEWBSTER** » Thu May 09, 2013 4:24 am

Robert, that program is what I had originally before I started forum hunting and adding things to it such as console and such to try to get the program to execute and wait for input on screen. My program itself did and still does work, its just that my JCL is missing something I think. I was also running it from within ISPF while editing the JCL and then just typing SUB in the command line.
I think I need to add something like :
//LKED.SYSLMOD DD DSN=KC03B97.FILES.LOAD(TEST1),DISP=SHR

The program is running, it is just doing it in the background. I will try this when I go home, as well as making the COBOL back to the more simple form it used to be with just basic ACCEPT and DISPLAY statements. Anyone see anything in my JCL that looks prohibitive for this to function correctly?

by **Robert Sample** » Thu May 09, 2013 5:02 am

As long as you are using JCL, you cannot interact with the program -- period. If you want to interact with the program, and you can get to a native TSO prompt (READY), you can enter these commands:

Select all

ALLOC DA(*) FI(SYSIN)
ALLOC DA(*) FI(SYSOUT)
CALL 'KC03B97.FILES.LOAD(TEST1)'

and you will interact with the program. Note that doing this is not always possible as some sites prevent access to native TSO by forcing use of ISPF. You can do the same thing through option 6 of ISPF as an alternative.

by **dick scherrer** » Thu May 09, 2013 7:10 pm

Hello,

FWIW - i would encourage you to work within ISPF. You may get "stuck" in native TSO (if you can get there at all).

Unfortunately, many of the newer "system programmers" have never worked in native TSO and may not be much help.

IBM Mainframe Forum

basic cobol program issue

basic cobol program issue

Re: basic cobol program issue

Re: basic cobol program issue

Re: basic cobol program issue

Re: basic cobol program issue

Re: basic cobol program issue

Re: basic cobol program issue

Re: basic cobol program issue

Re: basic cobol program issue

Re: basic cobol program issue