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CLIST – Performing I/O with CLIST

Duration

1 hour

Overview

Description

This course focuses on using CLISTs for the purpose of reading and interpreting data entered from the terminal. Also discussed are how CLIST can be used to read and write data to and from data sets.

Audience

Operations, system programmers, and application programming personnel using CLISTs to perform I/O operations.

Prerequisites

Completion of the Interskill CLIST – Basics and the CLIST – Advanced CLIST Coding courses or equivalent knowledge.

Objectives

After completing this course, the student will be able to:

  • Identify Statements Used for Reading and Interpreting Terminal Input
  • Code Statements Used to Allocate, Open, Read, and Write Data to and from a Data Set

Course Content

Terminal User Communications and File Processing

Reading Data
WRITENR, READDVAL, TERMIN and TERMING Statements
ALLOCATE Command
OPENFILE Statement
GETFILE Statement
PUTFILE Statement
Updating a File
CLOSFILE Statement
FREE Command
END OF FILE Condition