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Basic CL Programming workshop for IBM i

Currently no upcoming Class Dates


This classroom course is designed to teach you to write 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, programs.


  • Create CL programs that incorporate the full range of language operations and functions:
    • Arithmetic, string, and boolean expressions
    • Relational operations
    • Built-in functions
    • File handling
    • Retrieving IBM i information
    • Program interaction and parameter passing
  • Use the interactive source debugging facilities of STRDBG
  • Describe how to create and call Integrated Language Environment (ILE) modules, programs, and service programs
  • State the purpose of the parameters on the CRTBNDCL command and each section of the control language compiler listing


This intermediate course is intended for application programmers, system programmers, and others who have a need to write control language programs.


You should be able to:

  • Write simple programs in another programming language
  • Perform basic IBM i operations
  • Code the commands necessary to send inquiry and information messages
  • Use the following: data description specifications (DDS), Rational Development Studio (WDS) tools, Programming Development Manager (PDM), and source entry utility (SEU) to create physical, logical, and display files
  • Use the WDS or RDP tools to enter CL source statements and create CL programs
  • Describe basic work management
  • Create a library, output queue, and a job description

These prerequisites can be met through successful completion of the following courses:

  • Introduction to IBM i for New Users (OE980) or (OV981)
  • IBM i Application Programming Facilities Workshop (OL490) or (OV490)


2 days


Lecture - CL programming concepts

  • Lab exercise - Set up your environment

Lecture - Basic CL programming

  • Lab exercise - Write a basic CL program
  • Lab exercise - Initial program
  • Lab exercise - Menu-like program
  • Lab exercise - Call/Transfer control
  • Lab exercise - Calculator

Lecture - Program creation and debugging

  • Lab exercise - Debugging

Lecture - Intermediate CL programming

  • Lab exercise - Data area retrieval
  • Lab exercise - External attributes CVAT, %SST

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