Counter and Theme Toggle - Cobol Typing CST Test
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Counter and Theme Toggle — Cobol Code
Demonstrates a simple counter with theme toggling using COBOL variables and console output.
IDENTIFICATION DIVISION.
PROGRAM-ID. CounterProgram.
DATA DIVISION.
WORKING-STORAGE SECTION.
01 COUNT PIC 9(4) VALUE 0.
01 IS-DARK PIC X VALUE 'N'.
PROCEDURE DIVISION.
DISPLAY 'Counter: ' COUNT
DISPLAY 'Theme: ' IS-DARK
ADD 1 TO COUNT
DISPLAY 'Counter: ' COUNT
MOVE 'Y' TO IS-DARK
DISPLAY 'Theme: ' IS-DARK
SUBTRACT 1 FROM COUNT
DISPLAY 'Counter: ' COUNT
MOVE 0 TO COUNT
DISPLAY 'Counter: ' COUNT
STOP RUN.Cobol Language Guide
COBOL (Common Business-Oriented Language) is a high-level, English-like programming language designed for business applications, financial systems, batch processing, and large-scale enterprise data operations. Known for reliability, readability, and long-term stability.
Primary Use Cases
- ▸Banking and financial transaction systems
- ▸Payroll and HR systems
- ▸Insurance policy and claims processing
- ▸Government mainframe workloads
- ▸Batch data processing
- ▸Large-scale enterprise reporting
Notable Features
- ▸English-like syntax for clarity
- ▸Exceptional stability for long-running systems
- ▸Massive legacy ecosystem in enterprises
- ▸Strong support for structured data processing
- ▸Designed for business rules rather than hardware
Origin & Creator
Developed in 1959 by CODASYL (Conference on Data Systems Languages), with major contributions from Grace Hopper and the US Department of Defense.
Industrial Note
COBOL still powers core banking, insurance, payroll, and government systems worldwide - often handling billions of daily transactions in mission-critical environments.