IBM Mainframe Forum

by **gowthamgyaa** » Thu Oct 25, 2012 4:00 pm

Hi everyone,
while executing the below search coding, i got an error as Index name was no uniquely defined.
I kindly request you to guide me what may be the error.

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000001 IDENTIFICATION DIVISION.
000002 PROGRAM-ID. READPS.
000003 ENVIRONMENT DIVISION.
000004 DATA DIVISION.
000005 WORKING-STORAGE SECTION.
000006 01 SREC.
000007 02 STAB OCCURS 10 TIMES INDEXED BY SEARI.
000008 05 SNAME PIC A(7).
000009 05 SNO PIC 9(2).
000010 05 FILLER PIC 9(2).
000011 05 SMOB PIC 9(10).
000012 05 SM1 PIC 9(3).
000013 05 SM2 PIC 9(3).
000014 05 SM3 PIC 9(3).
000015 05 STOT PIC 9(4).
000016 05 FILLER PIC A(3).
000017 05 SAVG PIC 9(4)V9(4).
000018 05 RES PIC X(10).
000019 77 SIND PIC 9(2) VALUE 1.
000020 77 SEARI PIC 9(2) VALUE 1.
000021 77 PNO PIC 9(2).
000022 PROCEDURE DIVISION.
000023 MAIN-PARA.
000024 PERFORM TAB-PARA VARYING SIND FROM 1 BY 1 UNTIL SIND > 10.
000025 PERFORM SEARCH-PARA VARYING SEARI FROM 1 BY 1
000026 UNTIL SEARI > 10.
000027 STOP RUN.
000028 TAB-PARA.
000029 ACCEPT SNAME(SIND).
000030 ACCEPT SNO(SIND).
000031 ACCEPT SMOB(SIND).
000032 ACCEPT SM1(SIND).
000033 ACCEPT SM2(SIND).
000034 ACCEPT SM3(SIND).
000035 COMPUTE STOT(SIND) = SM1(SIND) + SM2(SIND) + SM3(SIND).
000036 COMPUTE SAVG(SIND) = STOT(SIND) / 3.
000037 IF (SAVG(SIND) > 50)
000038 DISPLAY "PASS"
000039 ELSE
000040 DISPLAY "FAIL"
000041 END-IF.
000042 DISPLAY RES(SIND).
000043 DISPLAY STAB(SIND).
000044 SEARCH-PARA.
000045 ACCEPT PNO.
000046 SEARCH STAB AT END DISPLAY "SEARCH FAILED"
000047 WHEN SNO(SIND) = PNO(SEARI)
000048 DISPLAY "SEARCH SUCCESS:" STAB(SIND)
000049 END-SEARCH.

MY ERROR CODE.

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. . . . . . . . . . . . . . . . . . . . . . . . . . .

==000025==> IGYPS0037-S "SEARI" was not a uniquely defined name. The definitio
not be determined from the context. The reference to t
discarded.

000026 UNTIL SEARI > 10.

==000026==> IGYPS0037-S "SEARI" was not a uniquely defined name. The definitio
not be determined from the context. The reference to t
discarded.

25 IGYPS0037-S "SEARI" was not a uniquely defined name. The definition
The reference to the name was discarded.

Same message on line: 26 47

47 IGYPS2120-S Expected a reference-modification specification but found

Kind Regards
gyaa

by **Pandora-Box** » Thu Oct 25, 2012 4:12 pm

Hi gowthamgyaa,

When you declare something like

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000007 02 STAB OCCURS 10 TIMES INDEXED BY SEARI.

You dont need to define

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000020 77 SEARI PIC 9(2) VALUE 1.

Which is confusing the compiler as it does not able to use SEARI uniquely as Index or a numeric variable

To Initialise the value you need to do something like

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SET SEARI TO 1.

To increment it you need

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SET SEARI UP BY 1.

by **BillyBoyo** » Thu Oct 25, 2012 4:15 pm

When you use INDEXED BY the compiler generates its own storage for the index. You mustn't. So remove your definition. Your other message for line 47 may go away when you fix this.

by **Robert Sample** » Thu Oct 25, 2012 4:30 pm

COBOL allows a programmer to define the same variable name more than once in a program -- as long as the name can be uniquely identified. This means that all 77 and 01 level names must be unique in the program. However, elementary variables in a group can have the same name since they can be referred to as <variable> IN <group name> (assuming the group name is unique, or the group name is the 01-level name). Your code does not allow for such references and hence the compiler error messages.

by **gowthamgyaa** » Thu Oct 25, 2012 5:10 pm

Hi everyone,
Do i need to use seperate index for search?

Kind regards
gyaa

by **Robert Sample** » Thu Oct 25, 2012 6:23 pm

COBOL has two forms of the SEARCH verb: SEARCH and SEARCH ALL. The first does a sequential search of the table and allows you to specify a subscript or index variable to use; the second requires the table to be sorted into ascending sequence and uses a table index variable.

If you write your own search, of course, you may do it however you want -- but using the verb is less code and lets you learn more.

And by the way, you have ACCEPT PNO in your SEARCH-PARA. which means you will have to provide as many as 10 input values for every table search.

Your code should be something like

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000023 MAIN-PARA.
000024 PERFORM LOAD-TABLE VARYING SIND FROM 1 BY 1 UNTIL SIND > 10.
000025 ACCEPT PNO
SET SEARI TO 1
SEARCH STAB
WHEN SNO (SEARI) = PNO
...

Using ACCEPT to input data values is a very tedious and error-prone way of getting data into your program. Placing the data in a file and reading the file would be MUCH easier and less likely to have errors.

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