PERFORM READ-PARA THRU END-PARA UNTIL END-OF-FILE 'Y'. 0.This tutorial covers the basics of getting a COBOL program to read a sequential text file for input and to display each records information to the applicati.For sequential access, the READ statement makes available the next or previous logical record from a file.For random access, the READ statement makes available a specified record from a mass storage file.I'm trying to write COBOL Program to read a flat file sequentially and write it to an output file, I'm able to read only one record at a time, not able to read next record what should I do Here is my code: PROCEDURE DIVISION. Please see the documentation under Programming->Data Access->File Handling for more information. NET managed code as well as in native code programs. Yes, Visual COBOL supports all of the standard COBOL file types like sequential, line sequential, relative.
Cobol Read File How To Read AAnswered On : Nov 22nd, 2007. 8: 03 Vendor-Name Pic X(40). 7: 03 Vendor-Number Pic 9 (8). Cobol RecordLayout 5: 01 Ams-Vendor. This Example shows how to read a Windows / Linux file and access the fields via the Cobol names. INTO ws-data-record : Indicates the record read from file.Reading a Cobol File.If the file position indicator was established by a previous READ statement, and the file is a sequential or relative file, or an indexed file whose current key of reference does not allow duplicates, and PREVIOUS was specified, the first existing record in the file whose record number or key value is less than or equal to the file position indicator is selected. PREVIOUS was not specified, the first existing record in the file whose record number or key value is greater than or equal to the file position indicator is selected. Kms office kuyhaaPREVIOUS was not specified, the first record in the file whose key value is either equal to the file position indicator and whose logical position within the set of duplicates is immediately after the record that was made available by that previous READ statement, or whose key value is greater than the file position indicator, is selected. For indexed files, if the file position indicator was established by a previous READ statement, and the current key of reference does allow duplicates, and PREVIOUS was specified, the first existing record in the file whose record number or key value is less than the file position indicator is selected. Jurassic park games pcFor a Format 1 READ statement, if the file position indicator indicates that no next (or previous) logical record exists, or that an optional input file is not present, the NOT AT END phrase, if specified, is ignored, and the following operations occur in the order specified: If the number of character positions in the record that is read is less than the minimum size specified by the record description entries for file-name-1, the portion of the record area that is to the right of the last valid character read is undefined.If the number of character positions in the record that is read is greater than the maximum size specified by the record description entries for file-name-1, the record is truncated on the right to the maximum size.In either case, the READ statement is successful and an I–O status value is set indicating that a record length conflict has occurred. For indexed files, the file position indicator is set to the value of the current key of reference of the record made available.The execution of the READ statement causes the value of the file status data item, if any, associated with file-name-1 to be updated.When the logical records of a file are described with more than one record description, they share the same storage area this is equivalent to an implicit redefinition of the area. For relative files, the file position indicator is set to the relative record number of the record made available.If the RELATIVE KEY clause is specified for file-name-1 and the number of significant digits in the relative record number of the selected record is larger than the size of the relative key data item, the file position indicator is set to indicate this condition and execution proceeds as described below for the case when no next record exists. For sequential files, the file position indicator is set to the record number of the record made available. Control is transferred to the end of the READ statement or to imperative-statement-2, if specified, in the NOT AT END phrase.In the latter case, execution continues according to the rules for each statement specified in imperative-statement-2.If a procedure branching or conditional statement that causes explicit transfer of control is executed, control is transferred in accordance with the rules for that statement otherwise, upon completion of the execution of imperative-statement-2, control is transferred to the end of the READ statement.For relative files if the RELATIVE KEY phrase is specified, the execution of a Format 1 READ statement updates the contents of the relative key data item such that it contains the relative record number of the record made available.For relative files the execution of a Format 2 READ statement sets the file position indicator to, and makes available, the record whose relative record number is contained in the data item named in the RELATIVE KEY phrase for the file. If no exception condition exists, the record is made available in the record area and any implicit move resulting from the presence of an INTO phrase is executed. If an exception condition other than at end exists, control is transferred according to rules of the USE procedure applicable to the file-name.
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