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How to find the length of a String in COBOL
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jagadeshdvn

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PostPosted: Mon Jul 25, 2005 10:01 pm    Post subject: How to find the length of a String in COBOL
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Hi,

Please let me know, How to find the length of a string in COBOL? Appreciate if you can explain the syntax with an example.
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thanooz

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PostPosted: Mon Jul 25, 2005 10:07 pm    Post subject:
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hi

there is interensic function

function length(variablename).





thanooz
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jagadeshdvn

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PostPosted: Mon Jul 25, 2005 10:17 pm    Post subject: Got It: (How to find the string length in COBOL)
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Thanks Thanooz. It nice of u buddy!!

Just to add for reference

Finding the length of data items
You can use the LENGTH function in many contexts (including numeric data and tables) to determine the length of string items.
The following COBOL statement demonstrates moving a data item into that field in a record that holds customer names:
Move Customer-name To Customer-record(1:Function Length(Customer-name))
You could also use the LENGTH OF special register. Coding either Function
Length(Customer-Name) or LENGTH OF Customer-Name returns the same result: the length of Customer-Name in bytes.
You can use the LENGTH function only where arithmetic expressions are allowed. However, you can use the LENGTH OF special register in a greater variety of contexts. For example, you can use the LENGTH OF special register as an argument to an intrinsic function that allows integer arguments. (You cannot use an intrinsic function as an operand to the LENGTH OF special register.) You can also use the LENGTH OF special register as a parameter in a CALL statement.
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mmwife

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PostPosted: Tue Jul 26, 2005 6:18 am    Post subject:
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Here's another take on the question.
Code:

01  TEXT1           PIC X(40) VALUE 'THIS IS THE STRING'.


INSPECT FUNCTION REVERSE(TEXT1) TALLYING L FOR LEADING SPACES
COMPUTE L = LENGTH OF TEXT1 - L

L will contain the length of the string in TEST1.
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Rameshs

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PostPosted: Tue Jul 26, 2005 12:31 pm    Post subject: Getting error
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"Length of dataname" is working But if i use Function Reverse(dataname) i am getting the error as follows

GYPS2121-S "FUNCTION" was not defined as a data-name.
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pruthvi

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PostPosted: Tue Jul 26, 2005 7:08 pm    Post subject: Re: How to find the string length in COBOL
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hi,

for me the above code is working fine and i got the correct output.
i tested the code in visual age ccobol
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Rameshs

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PostPosted: Wed Jul 27, 2005 9:12 am    Post subject: Re: How to find the string length in COBOL
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Hai pruthvi, icon_cool.gif

I am coding on mainframe environment using IGYWCL cobol compiler
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mmwife

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PostPosted: Sat Jul 30, 2005 7:44 pm    Post subject:
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Intrinsic functions were introduced to mainframe COBOL with COBOLII.
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Anurag Singh

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PostPosted: Sat Mar 29, 2008 10:34 pm    Post subject:
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Hi,
How to use the interensic function

function length(variablename).


where it will give the length of the variable??
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dick scherrer

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PostPosted: Sat Mar 29, 2008 11:00 pm    Post subject:
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Hello,

It will "give the length" into whatever field you tell it to. . . What you posted is only part of the code needed to retrieve the length.

Code:
compute lth-of-fld = function length(variablename).

or
Code:
compute lth-of-fld = length of variablename.


Keep in mind that this will give the length of the field, not the length of the data in the field. If the field is defined pic x(10) and the content is 'AAA', the length returned by the function is 10.

If you want the length of the content, you need more code. There are several examples in the COBOL section of the forum, so pick one that works for you.
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Bill O'Boyle

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PostPosted: Sat Mar 29, 2008 11:09 pm    Post subject: Re: How to find the string length in COBOL
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mmwife wrote:
Intrinsic functions were introduced to mainframe COBOL with COBOLII.

Jack,

A slight correction.

COBOL/370 (the successor to COBOL2) is the version/release where FUNCTIONS were first introduced.

Regards,

Bill
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mmwife

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PostPosted: Mon Mar 31, 2008 2:20 am    Post subject:
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Thanx Bill. My bad.
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Aji

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PostPosted: Mon Mar 31, 2008 1:34 pm    Post subject: Reply to: How to find the string length in COBOL
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Hi
This method is without using 'Function'.

Inspect Text1 Tallying L For Trailing Spaces.
Lenght = Length of Text1 - L.



Aji
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meen

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PostPosted: Fri Aug 14, 2009 11:02 pm    Post subject:
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Hi I tried implementing this:

Inspect Text1 Tallying L For Trailing Spaces.
Lenght = Length of Text1 - L.

But it is giving Maxxcc12 "TRAILING" was found in the "INSPECT" statement. The statement was discarded.
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dick scherrer

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PostPosted: Fri Aug 14, 2009 11:16 pm    Post subject:
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Hello,

Yup, you are not allowed to make up your own syntax. . .

At the top of the page is a link to "IBM Manuals" among which are the COBOL Language Reference and Programming Guide.

You might find REVERSE of interest. . .
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meen

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PostPosted: Fri Aug 14, 2009 11:21 pm    Post subject:
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I Tried REVERSE also
INSPECT FUNCTION REVERSE(TEXT1) TALLYING L FOR LEADING SPACES
COMPUTE L = LENGTH OF TEXT1 - L

Again getting MAXCC12
"FUNCTION" was specified as an informational word in the current reserved word table. The reserved word table used may be different from the IBM-supplied default. Refer to VS COBOL II Application Programming Language
"FUNCTION" was not defined as a data-name.
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dick scherrer

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PostPosted: Fri Aug 14, 2009 11:33 pm    Post subject:
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Hello,

Quote:
Refer to VS COBOL II
The compiler being used is too old. . .

Another way to get the answer is to use a loop and count the spaces 1 by 1 from the end of the field until the first non-blank.
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Bill O'Boyle

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PostPosted: Sat Aug 15, 2009 12:08 am    Post subject: Reply to: How to find the string length in COBOL
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Use reference-modification in an IN-LINE PERFORM, starting at the last byte of the STRING and proceed backwards, until the SUB is less than 1.

Define two WS fields, such as WS-SUB and WS-POS, as PIC 9(08) COMP fields, setting WS-SUB to THE LENGTH OF THE STRING and setting WS-POS to zero.

As you proceed backwards, when you find the position with the SPACE, move WS-SUB to WS-POS and MOVE zero to WS-SUB, which will terminate the PERFORM early.

After you come out of the PERFORM, WS-POS will equal zero (no SPACES found) or it will be non-zero, which will contain the position of first SPACE found beginning at the end of the STRING, proceeding backwards.

This is actually very rudimentary....

Bill
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Craq Giegerich

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PostPosted: Sat Aug 15, 2009 12:33 am    Post subject: Re: Reply to: How to find the string length in COBOL
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Use reference-modification in an IN-LINE PERFORM, starting at the last byte of the STRING and proceed backwards, until the SUB is less than 1.

Define two WS fields, such as WS-SUB and WS-POS, as PIC 9(08) COMP fields, setting WS-SUB to THE LENGTH OF THE STRING and setting WS-POS to ZERO.

As you proceed backwards, IF THE CHARACTER IS NOT = SPACE MOVE WS-SUB TO WS-POS AND MOVE zero to WS-SUB, which will terminate the PERFORM early.

After you come out of the PERFORM, WS-POS WILL BE CONTAIN THE LENGTH OF STRING EXCLUDING ANY TRAILING SPACES.
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Bill O'Boyle

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PostPosted: Sat Aug 15, 2009 12:41 am    Post subject: Reply to: How to find the string length in COBOL
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Craig,

Oops! Logic was bass-ackwards! icon_redface.gif

Thanks for the correction.
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