A concise, comprehensive introduction to the l985 ANSI and ISO Cobol standard. Treatment incorporates comparisons to the l974 standard. This is the first textbook to present Cobol programs in lower-case letters with reserved words in bold type. Begins with the language's file organization and access methods, introduces indexed files at an early stage, and treats file handling in detail. Appendixes provide a guide to details of Cobol syntax, reserved words, and language formats.
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Table of Contents
Background and Approach.
Files, Records, and Data Items.
Files and File Access.
Indexed FilesRandom Access.
Indexed FilesSequential Access.
Indexed FilesDynamic Access.
Numbers, Arithmetic, and Initialization.
Mixing Data Types.
Indexed FilesAlternate Record Keys.
Arrays and the Perform Statement.
More about Arrays.
Records with Varying Format and Varying Length.
String Handling and Redefinitions.
Parameter-Passing, Initial Programs, and External Data.
The Inspect and Evaluate Statements.
Other General Facilities.
Sorting and Other File-Handling Facilities.
Provisions for Portability.
Provisions for Efficiency.
The l974 Cobol Standard.
The Structure of the l985 Standard.