Parte ii - IIS Marconi Latina - Area didattica
Parte ii - IIS Marconi Latina - Area didattica
Parte ii - IIS Marconi Latina - Area didattica
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Manuale COBOL 969<br />
|Listato 82.217. Programma elementare che legge un file sequenziale, ad accesso<br />
dinamico. Le differenze rispetto all’esempio precedente sono evidenziate.<br />
|000100 IDENTIFICATION DIVISION.<br />
|000200 PROGRAM-ID. TEST-READ-DYN.<br />
|000300 AUTHOR. DANIELE GIACOMINI.<br />
|000400 INSTALLATION. NANOLINUX IV,<br />
|000500 TINYCOBOL 0.61,<br />
|000600 OPENCOBOL 0.31.<br />
|000700 DATE-WRITTEN. 2005-03-12.<br />
|000800*<br />
|000900 ENVIRONMENT DIVISION.<br />
|001000*<br />
|001100 INPUT-OUTPUT SECTION.<br />
|001200*<br />
|001300 FILE-CONTROL.<br />
|001400*<br />
|001500 SELECT FILE-DA-LEGGERE ASSIGN TO "input.seq"<br />
|001600 ORGANIZATION IS SEQUENTIAL<br />
|001700 ACCESS MODE IS DYNAMIC.<br />
|001800*<br />
|001900 DATA DIVISION.<br />
|002000*<br />
|002100 FILE SECTION.<br />
|002200*<br />
|002300 FD FILE-DA-LEGGERE<br />
|002400 LABEL RECORD IS STANDARD.<br />
|002500*<br />
|002600 01 RECORD-DA-LEGGERE PIC X(30).<br />
|002700*<br />
|002800 WORKING-STORAGE SECTION.<br />
|002900 01 EOF PIC 9 VALUE ZERO.<br />
|003000*<br />
|003100 PROCEDURE DIVISION.<br />
|003200*------------------------- LIVELLO 0 -----------------------------<br />
|003300 MAIN.<br />
|003400 OPEN INPUT FILE-DA-LEGGERE.<br />
|003500 READ FILE-DA-LEGGERE<br />
|003600 AT END<br />
|003700 MOVE 1 TO EOF.<br />
|003800 PERFORM LETTURA UNTIL EOF = 1.<br />
|003900 CLOSE FILE-DA-LEGGERE.<br />
|004000*<br />
|004100 STOP RUN.<br />
|004200*------------------------- LIVELLO 1 -----------------------------<br />
|004300 LETTURA.<br />
|004400 DISPLAY RECORD-DA-LEGGERE.<br />
|004500 READ FILE-DA-LEGGERE NEXT RECORD<br />
|004600 AT END<br />
|004700 MOVE 1 TO EOF.<br />
|004800*
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