COBOL Programming Part 1

Application Programmers with little or no previous experience in COBOL who require formal training in the basic language features and programming techniques.

An understanding of computer concepts is assumed. A working knowledge of ISPF Edit, if z/OS TSO/ISPF is the entry vehicle for programmers.

• Introduction
• Divisions of a COBOL program.
• COBOL character set.
• Words.
• Constants.
• Rules for continuation.
• Punctuation rules.
• COBOL coding format.
• Format notation.

• Identification Division
• Environment division.
• Configuration section.
• Input-Output section.

• Data Division (pt. 1)
• File description.
• Data description.
• Level number.
• Data-name / FILLER clause.
• REDEFINES clause.
• BLANK WHEN ZERO clause.
• PICTURE clause.
• Data types (Alphabetic, Alphanumeric and Numeric).

• Procedure Division (pt. 1)
• OPEN statement.
• CLOSE statement.
• READ statement.
• WRITE statement (disks, cartridges and tapes).
• MOVE statement.

• Program Control
• GO TO statement.
• PERFORM statement.
• PERFORM with TIMES.
• PERFORM with UNTIL.
• EXIT statement.
• STOP statement.

• Data Division (pt. 2)
• VALUE clause.
• SIGN IS clause.
• USAGE clause (DISPLAY, COMP, COMP-3).
• Data Types - Numeric.

• Procedure Division (pt. 2)
• Conditional Expressions.
• Relation condition.
• Class condition.
• Sign condition.
• Condition - Name condition.
• Complex condition.
• Order of evaluation of conditional statements.
• IF statement.

Data Division (pt. 3) 88 levels.

• Procedure Division (pt. 3)
• EVALUATE statement.
• SET statement.
• DISPLAY statement.
• ACCEPT statement.

• Arithmetic Statements
• ADD statement.
• SUBTRACT statement.
• MULTIPLY statement.
• DIVIDE statement.
• COMPUTE statement.

Procedure Division (pt. 4) WRITE statement (printing).

• Data Division (pt. 4)
• Edited Data.
• Alphanumeric Edited.
• Numeric Edited.
• Simple Insertion.
• Special Insertion.
• Fixed Insertion.
• Floating Insertion.
• Suppression and Replacement.

• Workshops
• Workshops in this class are conducted in a hands on IBM z/OS environment.
• Delegates will code execute and debug a series of programs serving as an excellent example for future programming in COBOL.