cobol
COBOL
COBOL runs 70% of the world's business transactions. Modern COBOL (GnuCOBOL 3.2 / IBM Enterprise COBOL) supports JSON, XML, and Object-Oriented features.
When to Use
- Mainframes: The backbone of banking/insurance systems (CICS/IMS).
- Legacy Migration: Moving logic to Linux/Cloud using GnuCOBOL.
- Decimal Arithmetic: Native fixed-point math (
PICTURE 9V99) is unmatched for currency.
Core Concepts
Divisions
IDENTIFICATION, ENVIRONMENT, DATA, PROCEDURE.
Picture Clause
01 SALARY PIC 9(5)V99. Defines data layout precisely.
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