PL/I Prime Checker - Pli Typing CST Test

Mode:

Duration:

DECLARE nums FIXED BINARY(31) DIM(3) INIT(7,10,13);
DECLARE n,i FIXED BINARY(31);
DECLARE isPrime BIT(1);

DO n = 1 TO 3;
	isPrime = '1'B;
	DO i = 2 TO nums(n)-1;
		IF nums(n) MOD i = 0 THEN isPrime = '0'B;
	END;
	IF isPrime = '1'B THEN PUT SKIP LIST(nums(n), 'is Prime')
	ELSE PUT SKIP LIST(nums(n), 'is Not Prime');
END;Coding works best on desktop or with an external keyboard.

PL/I Prime Checker — Pli Code

Checks if numbers are prime.

DECLARE nums FIXED BINARY(31) DIM(3) INIT(7,10,13);
DECLARE n,i FIXED BINARY(31);
DECLARE isPrime BIT(1);

DO n = 1 TO 3;
	isPrime = '1'B;
	DO i = 2 TO nums(n)-1;
		IF nums(n) MOD i = 0 THEN isPrime = '0'B;
	END;
	IF isPrime = '1'B THEN PUT SKIP LIST(nums(n), 'is Prime')
	ELSE PUT SKIP LIST(nums(n), 'is Not Prime');
END;

Pli Language Guide

PLI (Programming Language One) is a procedural, compiled language designed for business and systems programming, particularly for large-scale data processing and legacy IBM mainframe environments.

Primary Use Cases

▸Large-scale batch processing
▸Business and financial systems
▸Mainframe application maintenance
▸Data processing for enterprises
▸Legacy system integration and updates

Notable Features

▸Structured programming constructs
▸Strong support for record and array data types
▸Compiled for IBM mainframes
▸Integrated input/output for batch processing
▸Efficient memory and file handling

Origin & Creator

Developed by IBM in the 1960s, primarily as a high-level language for business and systems applications on mainframe computers.

Industrial Note

PLI remains in use in legacy IBM mainframe environments for maintaining mission-critical financial and administrative systems.

Quick Explain

▸PLI was created to handle structured programming for commercial applications on IBM mainframes.
▸It combines features from FORTRAN and ALGOL, with strong support for structured control, record handling, and input/output.
▸It was widely used in banking, insurance, and enterprise resource planning systems due to its reliability and performance on mainframes.

Core Features

▸Procedures and subroutines
▸Arrays, tables, and records
▸Structured loops and conditionals
▸Built-in file and print handling
▸Static typing with mainframe-optimized compilation

Learning Path

▸Understand mainframe environment and JCL
▸Learn basic PLI syntax and procedures
▸Practice arrays, records, and tables
▸Develop small batch processing programs
▸Study legacy systems and integration patterns

Practical Examples

▸Generating financial reports
▸Processing customer records in batch
▸Updating mainframe database entries
▸Calculating payroll or invoices
▸Integrating with legacy enterprise systems

Comparisons

▸More structured than early COBOL
▸Optimized for mainframe batch processing
▸Less portable than modern languages
▸Similar purpose as PL/I but IBM-focused
▸Strong legacy presence in banking and enterprise

Strengths

▸Highly reliable for business-critical applications
▸Optimized for IBM mainframes
▸Structured syntax reduces errors
▸Good for batch and report processing
▸Supports modular programming with procedures

Limitations

▸Mainframe-dependent and outdated for modern platforms
▸Limited modern tooling or IDE support
▸Not suitable for web, mobile, or GUI applications
▸Smaller community compared to modern languages
▸Steeper learning curve for new programmers

When NOT to Use

▸Modern web, mobile, or GUI applications
▸Cross-platform development outside IBM mainframes
▸Rapid prototyping or scripting tasks
▸Machine learning or modern data analytics
▸Systems requiring modern community support or libraries

Cheat Sheet

▸DECLARE x FIXED BIN(31); - declare integer variable
▸DECLARE rec RECORD (field1 FIXED BIN(31), field2 CHAR(10));
▸PROCEDURE name(); - define procedure
▸IF condition THEN … ELSE … ENDIF; - conditional
▸DO i = 1 TO 10; … ENDDO; - loop

FAQ

▸Is PLI still used?
▸Yes, primarily for legacy IBM mainframe systems.
▸Can PLI handle modern computing tasks?
▸Not efficiently; it is optimized for batch and enterprise processing.
▸Is PLI portable?
▸Mostly limited to IBM mainframe environments.
▸Does PLI support structured programming?
▸Yes, with procedures, loops, and conditionals.
▸What industries still use PLI?
▸Banking, insurance, government, and other mainframe-reliant sectors.

30-Day Skill Plan

▸Week 1: PLI syntax and variable types
▸Week 2: Arrays, records, and tables
▸Week 3: Procedures and modular routines
▸Week 4: Batch job creation and execution
▸Week 5: Enterprise mainframe application maintenance

Final Summary

▸PLI is a procedural, compiled language optimized for IBM mainframes.
▸Used for structured business and batch processing applications.
▸Strong support for records, arrays, and modular procedures.
▸Mostly relevant today for legacy enterprise systems.
▸Combines reliability, structured programming, and mainframe efficiency.

Project Structure

▸Source/ - PLI source files
▸Bin/ - compiled object code
▸Lib/ - mainframe runtime libraries
▸Docs/ - documentation and specifications
▸Jobs/ - JCL scripts for batch execution

Monetization

▸Enterprise legacy system maintenance
▸Banking and financial software support
▸Mainframe consulting and modernization
▸Educational material for mainframe programming
▸Historical study of procedural languages

Productivity Tips

▸Use modular procedures to reduce redundancy
▸Document batch job steps
▸Leverage record structures for clarity
▸Test small modules before full job submission
▸Maintain consistent naming conventions

Basic Concepts

▸Variables, constants, and data types
▸Procedures and modular routines
▸Arrays, records, and tables
▸Structured control flow: IF, DO, LOOP
▸Input/output and batch processing

Official Docs

▸IBM PL/I Language Reference
▸IBM mainframe PLI compiler manuals
▸Enterprise batch processing documentation

More Pli Typing Exercises

PL/I Counter and Theme Toggle PL/I Random Number Generator PL/I Todo List PL/I Dice Roller PL/I Countdown Timer PL/I Temperature Converter PL/I Shopping Cart PL/I Name Greeting PL/I Stopwatch

Practice Other Languages

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DECLARE nums FIXED BINARY(31) DIM(3) INIT(7,10,13);
DECLARE n,i FIXED BINARY(31);
DECLARE isPrime BIT(1);

DO n = 1 TO 3;
isPrime = '1'B;
DO i = 2 TO nums(n)-1;
IF nums(n) MOD i = 0 THEN isPrime = '0'B;
END;
IF isPrime = '1'B THEN PUT SKIP LIST(nums(n), 'is Prime')
ELSE PUT SKIP LIST(nums(n), 'is Not Prime');
END;

Coding works best on desktop or with an external keyboard.

PL/I Prime Checker — Pli Code

Checks if numbers are prime.

DECLARE nums FIXED BINARY(31) DIM(3) INIT(7,10,13); DECLARE n,i FIXED BINARY(31); DECLARE isPrime BIT(1); DO n = 1 TO 3; isPrime = '1'B; DO i = 2 TO nums(n)-1; IF nums(n) MOD i = 0 THEN isPrime = '0'B; END; IF isPrime = '1'B THEN PUT SKIP LIST(nums(n), 'is Prime') ELSE PUT SKIP LIST(nums(n), 'is Not Prime'); END;

Pli Language Guide

PLI (Programming Language One) is a procedural, compiled language designed for business and systems programming, particularly for large-scale data processing and legacy IBM mainframe environments.

Primary Use Cases

▸Large-scale batch processing
▸Business and financial systems
▸Mainframe application maintenance
▸Data processing for enterprises
▸Legacy system integration and updates

Notable Features

▸Structured programming constructs
▸Strong support for record and array data types
▸Compiled for IBM mainframes
▸Integrated input/output for batch processing
▸Efficient memory and file handling

Origin & Creator

Developed by IBM in the 1960s, primarily as a high-level language for business and systems applications on mainframe computers.

Industrial Note

PLI remains in use in legacy IBM mainframe environments for maintaining mission-critical financial and administrative systems.