control language (CL)
Course overview
Learn to write easy to use and efficient control language (CL) programs which may be used to perform a variety of system and application control functions. You are taught to write basic and intermediate level, interactive, and batch CL programs, user commands, and CL programs that function as user tools (programs that use the output of display commands as input You will learn to write Control Language (CL) programs which may be used to perform a variety of system and application control functions. You will be taught to write basic and intermediate level interactive and batch CL programs as well as programs that function as user tools (programs that use the output of display commands as input).
Course Duration
4 Days
Cost
Audience
This intermediate course is for application programmers, system programmers, and others who have a need to write control language programs.
Prerequisites
You should be able to:
Write simple programs in another programming language
Perform basic IBM i operationsCode the commands necessary to send inquiry and information messages Use data description specifications (DDS) and the Rational Development Studio (formerly known as Websphere Development Studio, WDS) tools (Programming Development Manager (PDM) and source entry utility (SEU)) to create physical, logical, and display filesUse the WDS tools to enter CL source statements and create CL programsDescribe basic work managementCreate a library, output queue, and a job descriptionThese prerequisites can be met through successful completion of the following courses:Introduction to IBM i for New Users (OL98G)IBM i Technical Introduction (OL4AG)
Course Content
CL programming concepts
Lab – Set up your environment (required)
Basic CL programming
Lab – Write a basic CL program (required)
Lab – Initial program (required)
Lab – Menu-like program (required)
Lab – Call/Transfer control (required)
Lab – Calculator (required)
Program creation and debugging
Lab – Debugging (required)
Intermediate CL programming
Lab – Data area retrieval (recommended)
Lab – External attributes CVAT, SST (recommended)
CL message programming (topic 1)
Lab – Basic message handling (required)
Lab – Send user message command (required)
CL message programming (topic 2)
Lab – Monitor message (required)
Lab – Message programming (required)
Lab – Inquiry messages (recommended)
User-written tools
Lab – User-written tool (optional)
Batch jobs
Lab – SBMJOB and LDA (recommended)
Lab – Data queues (recommended)
Commands
Lab – Commands (recommended)