November 1998
Beginner
496 pages
14h 6m
English
Content preview from Sams Teach Yourself COBOL in 24 Hours
Hour 23The
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Hour 23The Call Interface
COBOL programs may execute other COBOL programs or even programs written in a different source language. The COBOL standard defines a simple method for accomplishing this task: the Call statement. In this hour, you learn how to write a program that calls another program and how to write the program that is called. You learn the information necessary to successfully interface and communicate between calling and called programs, such as
• How to Call another program
• Passing data to a called program from a calling program By Reference and By Content
• Coding the Linkage Section and the Procedure Division to allow a program to be called
• Static versus dynamic calls
• The importance of synchronizing the calling parameters ...
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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.
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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.