May 2023
Intermediate to advanced
416 pages
8h 17m
German
Content preview from COBOL - Altsysteme warten und erweitern
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Kapitel 13: Tabellenverarbeitung
Stellen Sie sich vor, Sie benötigen für die Verarbeitung eines bestimmten Programms eine Reihe von Datenfeldern, die die gleichen Längen und die gleichen sonstigen Merkmale aufweisen. Wie sollen nun solche Datenfelder definiert werden?
Ohne Tabellendefinitionen müsste man jedes Datenfeld einzeln, entsprechend seinen Eigenschaften, definieren; die Felder erhielten dann unterschiedliche Namen. Für zwölf Umsatzfelder würden die Definitionen wie in Listing 13.1 aussehen.
01 UMSATZ-1 PIC 9(6),99.01 UMSATZ-2 PIC 9(6),99.::01 UMSATZ-11 PIC 9(6),99.01 UMSATZ-12 PIC 9(6),99.
Listing 13.1: Definition von zwölf einzelnen Umsatzfeldern
Diese Art, eine Reihe von gleichartigen Datenfeldern festzulegen, erhöht die Programmier- ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.