Reference modification in cobol This is special purpose option and can be used to move partially selected content of sending field to the receiving field; In COBOL-85, it is possible to refer part of a data field by mentioning the leftmost character position and length. It is mainly useful when dealing with strings, where we might want to handle only a specific part of the data. Reference modification is a feature introduced in COBOL - II. Using this feature we can extract a part of data contained in alphanumeric or alphabetic variable. Unless otherwise specified, reference modification is allowed anywhere an identifier or function-identifier that references a data item or function with the same usage as the reference-modified data item is permitted. This unique data item is considered an elementary data item without the JUSTIFIED Reference Modification: Definition & Syntax: Reference Modification allows you to treat a numeric (PIC 9) or alphanumeric (PIC X) data-item as if it were an array of characters. 000360 01 CAT-ABBREV PIC X(5). So if we want to use reference modification for ww-grp1. Reference-modification is a very fast way of accessing data. General Format: [data-name] ( starting-offset : [ number-of-bytes ] ) WS-COUNTRY-CODE value moved to first 2 bytes of WS-FULL-PHN-NBR. Sep 7, 2018 · There is one thing which I don't understand about reference modification in Cobol. we are facing problem in retreiving the value using reference modification. To access sub-strings using Reference Modification you must specify; the name of the data-item Sep 6, 2006 · COBOL Reference Modification Working-Storage for Examples 1, 2, and 3000340 01 CAT-TYPE PIC X(15) VALUE 'CALICO'. Reference modification creates a unique data item that is a subset of data-name-1 or a subset of the value referenced by function-name-1 and its arguments, if any. MOVE: reference modification. Reference Modification. Reference modification defines a data item by specifying a starting position and length for the item. Read about reference modification in one of the Language Reference manuals and if you find something that is not clear, post what you found and your doubt. 2. Does it mean that the first two signs 4 signs after the target are moved? PROGRAM-ID. MOVE TEMP TO B. For example: If we have a following variable: 05 WS-DATE-VAR PIC X(10) VALUE '12/06/2006'. This is a way that a sub-field of a field can be defined, at compile time (if start position and length are known) or on-the-fly at run-time if either or both of start position and length are variable. RefModification. Michael Coughlan. For example, assume below data declaration Reference Modification provides syntax for referencing a portion of the memory allocated by a data item. Starting-offset is a numeric literal, or data-item. MOVE Referencing Modification It is a special-purpose MOVE that moves a portion of data from the sending item to the receiving item. IGYPG3192-E A reference-modification length value caused reference to be made be the rightmost character of "B". A reference extending to the end of was assumed. 05 WS-MONTH-VAR PIC 9(02). WS-AREA-CODE value moved to 3rd and 4th positions of WS-FULL-PHN-NBR. IGYPG3191-E A reference-modifier start value exceeded the number of characters i "B". If you had an 8 character field1 that was "11111111" Reference modification is more efficient, but can lead to code that is more difficult to read and maintain. DISPLAY 'B= ' B. move field1 (1:4) to field2 (5:4). General Rules: Aug 29, 2008 · COBOL Programming: Hi, Is reference modification of an array variable possible? say ws-staticname(wx-ctr1) (12:3) is giving me error. DATA DIVISION. WS-PHONE-NBR value moved to WS-FULL-PHN-NBR from 5th position to 8 bytes. MOVE TEMP TO C(B). For example, the result of the statement: MOVE A(B) TO B, C(B). * The program solves a number of tasks suggested by Judy Yaeger in her * article "Character Manipulation Using COBOL" where she attempted to show * the limitations of COBOL string handling. Please help. 0 MOVE Referencing Modification It is a special-purpose MOVE that moves a portion of data from the sending item to the receiving item. It is a way to improve performance in programs that use STRING heavily and are running slowly or growing too large. Reference Modification in MOVE Statement MOVE WS-FULL-NAME(1:3) TO WS-NAME Field Name Value; WS-FULL-NAME: Mar 29, 2016 · Tom's code uses "reference modification". For usage DISPLAY, reference modification operates as though each character were a single-byte character. Throughout the years I have been asked to provide clients with mainframe assembler routines to do various functions. If data-name-1 is an expanded date field, then the result of reference modification is a nondate. Dec 27, 2013 · IGYPS2120-S Expected a reference-modification specification but found ")". 004310 Dec 30, 2006 · COBOL Programming: what is Reference Modification? Well, you are in the correct forum, why didn't you save yourself time and look at the FM: COBOL Language Reference A reference modification does not create a persistent data item. X It must not represent an edited data item or external floating-point X item and must not be described with the JUSTIFIED clause. PP 5655-S71 IBM Enterprise COBOL for z/OS 4. This is mainly useful when dealing with strings, where we might want to handle only a specific part of the data item. TIA, Deepa Aug 23, 2018 · COBOL Reference Modification With OF Syntax to use reference modification for a filed, which exists in multiple groups. is equivalent to: MOVE A(B) TO TEMP. This unique data item is considered an elementary data item without the JUSTIFIED clause. move name1 of ww-grp1(1:4) to var1 Jun 8, 2007 · COBOL Programming: Hi, The numeric value is stored in COMP-3 format in the file. . COBOL is an acronym for COmmon Business Oriented Language which is primarily developed for business, finance and administrative system needs. Any length evaluation, subscripting, or reference-modification associated with a receiving field (identifier-2) is evaluated immediately before the data is moved into that receiving field. Oct 31, 2010 · A subject of "COBOL" will get few replies. Common Business-Oriented Language (COBOL) is a programming language similar to English that is widely used to develop business-oriented applications in the a COBOL example sample reference code 26. Learn various types of MOVE statements like Simple Move, Corresponding Move, Reference Modification Move in COBOL. Apr 8, 2009 · IBM COBOL for MVS® & VM Language Reference SC26-4769-04 wrote: INTO Phrase identifier-3 Represents the receiving field. General Format: [data-name] ( starting-offset : [ number-of-bytes ] ) Syntax: Data-name is a data-item declared in the Data Division. 000350 01 DOG-TYPE PIC X(15) VALUE 'SCHNAUZER'. * An example program using Reference Modification, Intrinsic Functions * and the INSPECT. Reference Modification Example Number 1- From position 1 For 5 positions. The "CALL" statement was discarded. The example goes like this: MOVE VARIABLE(VARIABLE2 +4:2) TO VARIABLE3 Now I do not qutie understand what the "+4:2" references to. Someone will be able to 参照変更 は、 データ項目の左端の文字位置 (開始桁) とそのデータ項目の長さ (オプション) を指定することによってデータ項目を定義するものです。 Jun 20, 2001 · Reference modification allows you to move part of a sending field to part of a receiving field. and our requirement is to retrive month part of WS-DATE-VAR. At the top of the page is a link to "IBM Manuals". MOVE A TO B (37 : 35) . It is generally allowed anywhere an identifier referencing an alphanumeric data item is allowed. As an IBM X extension, identifier-3 can be reference-modified. Unless the result of the reference modification is assigned to a compatible data object, you can refer to the value of the reference modification later in the program only by repeating the reference modification. 000370 01 DOG-END PIC X(10). MOVE reference modification is used for a special purpose to move part of data from the sending item to the receiving item. Reference Modification provides syntax for referencing a portion of the memory allocated by a data item. Ex: 01 ww-grp1 03 name1 pic x(10) 03 sal pic 9(4) 01 ww-grp2 03 name1 pic x(10) 03 sal pic 9(4) name1 exists in both groups. One needs to use a proper subject. DISPLAY 'A= ' A. AUTHOR. The first of these is for COBOL. . Prior to the introduction of Reference Modification in the ANSI/85 standard for COBOL the scanning or parsing of a field at the character-by-character level was very difficult and troublesome. ibqnzuu xdsn ovab kzdvta pddv fwjix fnlmgbe vvsqjwc tksfr yitns wawe zsc ilus qqmz eegfnk