The END-SET statement represents a fundamental component of index and pointer management in COBOL, serving as an explicit scope terminator that clearly defines the boundaries of SET statement blocks. This statement embodies modern data manipulation principles by providing unambiguous termination points for index assignment operations, enabling sophisticated pointer arithmetic and table navigation, and supporting the development of efficient data processing applications that require precise control over index positioning and pointer manipulation operations.
In contemporary enterprise COBOL development, END-SET plays a vital role in creating sophisticated table processing systems that must handle complex index calculations, dynamic table navigation, and various pointer management scenarios. By providing explicit termination for SET blocks, this statement enables developers to implement comprehensive index manipulation logic while maintaining code clarity and ensuring that pointer operations are properly bounded and controlled within the application's data processing flow.
123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255256257258259260261262263264265266267268269270271272273274275276277278279280281282283284285286287288289290291292293294295296297298299300301302303304305306307308309310311312313314315IDENTIFICATION DIVISION. PROGRAM-ID. END-SET-DEMO. DATA DIVISION. WORKING-STORAGE SECTION. 01 STUDENT-TABLE. 05 STUDENT-COUNT PIC 9(3) VALUE 20. 05 STUDENT-ENTRIES OCCURS 1 TO 100 TIMES DEPENDING ON STUDENT-COUNT INDEXED BY STUD-INDEX, STUD-INDEX2. 10 STUDENT-ID PIC X(10). 10 STUDENT-NAME PIC X(30). 10 STUDENT-GRADE PIC X(2). 10 STUDENT-GPA PIC 9V99. 10 ENROLLMENT-DATE PIC X(8). 01 COURSE-TABLE. 05 COURSE-COUNT PIC 9(2) VALUE 10. 05 COURSE-ENTRIES OCCURS 10 TIMES INDEXED BY COURSE-INDEX. 10 COURSE-CODE PIC X(8). 10 COURSE-NAME PIC X(40). 10 CREDIT-HOURS PIC 9(2). 10 INSTRUCTOR PIC X(25). 01 INDEX-CONTROLS. 05 CURRENT-POSITION PIC 9(3). 05 START-POSITION PIC 9(3). 05 END-POSITION PIC 9(3). 05 STEP-SIZE PIC 9(2) VALUE 1. 05 PROCESSING-COUNT PIC 9(5) VALUE 0. 01 CONDITIONAL-FLAGS. 05 FOUND-FLAG PIC X VALUE 'N'. 88 ITEM-FOUND VALUE 'Y'. 88 ITEM-NOT-FOUND VALUE 'N'. 05 CONTINUE-FLAG PIC X VALUE 'Y'. 88 CONTINUE-PROCESSING VALUE 'Y'. 88 STOP-PROCESSING VALUE 'N'. 01 POINTER-VARIABLES. 05 DATA-POINTER POINTER. 05 BACKUP-POINTER POINTER. 05 TEMP-POINTER POINTER. PROCEDURE DIVISION. MAIN-PROCESSING. PERFORM INITIALIZE-TABLES PERFORM DEMONSTRATE-BASIC-INDEX-OPERATIONS PERFORM DEMONSTRATE-CONDITIONAL-SET-OPERATIONS PERFORM DEMONSTRATE-COMPLEX-INDEX-MANIPULATION PERFORM DEMONSTRATE-POINTER-OPERATIONS PERFORM DISPLAY-PROCESSING-STATISTICS STOP RUN. INITIALIZE-TABLES. DISPLAY 'Initializing student and course tables...' *> Initialize student table PERFORM VARYING STUD-INDEX FROM 1 BY 1 UNTIL STUD-INDEX > STUDENT-COUNT STRING 'STUD' DELIMITED BY SIZE STUD-INDEX DELIMITED BY SIZE INTO STUDENT-ID(STUD-INDEX) END-STRING STRING 'STUDENT NAME ' DELIMITED BY SIZE STUD-INDEX DELIMITED BY SIZE INTO STUDENT-NAME(STUD-INDEX) END-STRING EVALUATE FUNCTION MOD(STUD-INDEX, 4) WHEN 0 MOVE 'A' TO STUDENT-GRADE(STUD-INDEX) MOVE 3.75 TO STUDENT-GPA(STUD-INDEX) WHEN 1 MOVE 'B' TO STUDENT-GRADE(STUD-INDEX) MOVE 3.25 TO STUDENT-GPA(STUD-INDEX) WHEN 2 MOVE 'B' TO STUDENT-GRADE(STUD-INDEX) MOVE 3.50 TO STUDENT-GPA(STUD-INDEX) WHEN 3 MOVE 'A' TO STUDENT-GRADE(STUD-INDEX) MOVE 3.90 TO STUDENT-GPA(STUD-INDEX) END-EVALUATE MOVE '20230915' TO ENROLLMENT-DATE(STUD-INDEX) END-PERFORM *> Initialize course table PERFORM VARYING COURSE-INDEX FROM 1 BY 1 UNTIL COURSE-INDEX > COURSE-COUNT STRING 'CS' DELIMITED BY SIZE COURSE-INDEX DELIMITED BY SIZE INTO COURSE-CODE(COURSE-INDEX) END-STRING STRING 'COMPUTER SCIENCE ' DELIMITED BY SIZE COURSE-INDEX DELIMITED BY SIZE INTO COURSE-NAME(COURSE-INDEX) END-STRING COMPUTE CREDIT-HOURS(COURSE-INDEX) = FUNCTION MOD(COURSE-INDEX, 4) + 3 STRING 'PROFESSOR ' DELIMITED BY SIZE COURSE-INDEX DELIMITED BY SIZE INTO INSTRUCTOR(COURSE-INDEX) END-STRING END-PERFORM DISPLAY 'Tables initialized successfully'. DEMONSTRATE-BASIC-INDEX-OPERATIONS. DISPLAY 'Demonstrating basic index operations...' *> Set index to specific position SET STUD-INDEX TO 1 ON SIZE ERROR DISPLAY 'Error setting index to position 1' NOT ON SIZE ERROR DISPLAY 'Index set to position 1' DISPLAY 'Student: ' STUDENT-NAME(STUD-INDEX) ADD 1 TO PROCESSING-COUNT END-SET *> Set index to middle position COMPUTE CURRENT-POSITION = STUDENT-COUNT / 2 SET STUD-INDEX TO CURRENT-POSITION ON SIZE ERROR DISPLAY 'Error setting index to middle position' NOT ON SIZE ERROR DISPLAY 'Index set to middle position: ' CURRENT-POSITION DISPLAY 'Student: ' STUDENT-NAME(STUD-INDEX) ADD 1 TO PROCESSING-COUNT END-SET *> Set index to last position SET STUD-INDEX TO STUDENT-COUNT ON SIZE ERROR DISPLAY 'Error setting index to last position' NOT ON SIZE ERROR DISPLAY 'Index set to last position: ' STUDENT-COUNT DISPLAY 'Student: ' STUDENT-NAME(STUD-INDEX) ADD 1 TO PROCESSING-COUNT END-SET DISPLAY 'Basic index operations completed'. DEMONSTRATE-CONDITIONAL-SET-OPERATIONS. DISPLAY 'Demonstrating conditional SET operations...' *> Set index based on condition MOVE 5 TO START-POSITION MOVE 15 TO END-POSITION SET STUD-INDEX TO START-POSITION ON SIZE ERROR DISPLAY 'Error setting start position' SET STOP-PROCESSING TO TRUE NOT ON SIZE ERROR DISPLAY 'Starting conditional processing at position: ' START-POSITION PERFORM UNTIL STUD-INDEX > END-POSITION OR STOP-PROCESSING *> Process current student DISPLAY 'Processing student: ' STUDENT-NAME(STUD-INDEX) DISPLAY 'GPA: ' STUDENT-GPA(STUD-INDEX) *> Conditional index increment based on GPA IF STUDENT-GPA(STUD-INDEX) >= 3.50 DISPLAY 'High GPA student - advancing by 2' SET STUD-INDEX UP BY 2 ON SIZE ERROR DISPLAY 'Index overflow during conditional increment' SET STOP-PROCESSING TO TRUE NOT ON SIZE ERROR ADD 2 TO PROCESSING-COUNT END-SET ELSE DISPLAY 'Standard processing - advancing by 1' SET STUD-INDEX UP BY 1 ON SIZE ERROR DISPLAY 'Index overflow during standard increment' SET STOP-PROCESSING TO TRUE NOT ON SIZE ERROR ADD 1 TO PROCESSING-COUNT END-SET END-IF END-PERFORM END-SET DISPLAY 'Conditional SET operations completed'. DEMONSTRATE-COMPLEX-INDEX-MANIPULATION. DISPLAY 'Demonstrating complex index manipulation...' *> Parallel index processing SET STUD-INDEX TO 1 SET STUD-INDEX2 TO STUDENT-COUNT ON SIZE ERROR DISPLAY 'Error initializing parallel indexes' NOT ON SIZE ERROR DISPLAY 'Parallel index processing initialized' PERFORM UNTIL STUD-INDEX >= STUD-INDEX2 DISPLAY 'Forward: ' STUDENT-NAME(STUD-INDEX) DISPLAY 'Backward: ' STUDENT-NAME(STUD-INDEX2) *> Compare GPAs IF STUDENT-GPA(STUD-INDEX) > STUDENT-GPA(STUD-INDEX2) DISPLAY 'Forward student has higher GPA' ELSE IF STUDENT-GPA(STUD-INDEX) < STUDENT-GPA(STUD-INDEX2) DISPLAY 'Backward student has higher GPA' ELSE DISPLAY 'Students have equal GPA' END-IF END-IF *> Advance both indexes SET STUD-INDEX UP BY 1 SET STUD-INDEX2 DOWN BY 1 ON SIZE ERROR DISPLAY 'Index boundary reached' EXIT PERFORM NOT ON SIZE ERROR ADD 2 TO PROCESSING-COUNT END-SET END-PERFORM END-SET *> Dynamic step processing MOVE 2 TO STEP-SIZE SET STUD-INDEX TO 1 ON SIZE ERROR DISPLAY 'Error setting dynamic step index' NOT ON SIZE ERROR DISPLAY 'Dynamic step processing with step size: ' STEP-SIZE PERFORM UNTIL STUD-INDEX > STUDENT-COUNT DISPLAY 'Step processing: ' STUDENT-NAME(STUD-INDEX) *> Dynamic step adjustment based on grade IF STUDENT-GRADE(STUD-INDEX) = 'A' MOVE 3 TO STEP-SIZE DISPLAY 'A grade - increasing step to 3' ELSE MOVE 1 TO STEP-SIZE DISPLAY 'Other grade - step size 1' END-IF SET STUD-INDEX UP BY STEP-SIZE ON SIZE ERROR DISPLAY 'End of table reached with dynamic stepping' EXIT PERFORM NOT ON SIZE ERROR ADD STEP-SIZE TO PROCESSING-COUNT END-SET END-PERFORM END-SET DISPLAY 'Complex index manipulation completed'. DEMONSTRATE-POINTER-OPERATIONS. DISPLAY 'Demonstrating pointer operations...' *> Set pointer to address of table entry SET DATA-POINTER TO ADDRESS OF STUDENT-ENTRIES(1) ON SIZE ERROR DISPLAY 'Error setting data pointer' NOT ON SIZE ERROR DISPLAY 'Data pointer set to first student entry' SET BACKUP-POINTER TO DATA-POINTER ON SIZE ERROR DISPLAY 'Error backing up pointer' NOT ON SIZE ERROR DISPLAY 'Pointer backed up successfully' END-SET END-SET *> Demonstrate pointer arithmetic (conceptual) SET TEMP-POINTER TO DATA-POINTER ON SIZE ERROR DISPLAY 'Error copying pointer' NOT ON SIZE ERROR DISPLAY 'Pointer copied for manipulation' *> In practice, pointer arithmetic would be done through *> proper COBOL mechanisms or system calls DISPLAY 'Pointer manipulation operations completed' END-SET *> Reset pointer from backup SET DATA-POINTER TO BACKUP-POINTER ON SIZE ERROR DISPLAY 'Error restoring pointer from backup' NOT ON SIZE ERROR DISPLAY 'Pointer restored from backup successfully' END-SET DISPLAY 'Pointer operations completed'. DISPLAY-PROCESSING-STATISTICS. DISPLAY 'Processing Statistics:' DISPLAY 'Total operations performed: ' PROCESSING-COUNT DISPLAY 'Student table size: ' STUDENT-COUNT DISPLAY 'Course table size: ' COURSE-COUNT IF PROCESSING-COUNT > 0 COMPUTE CURRENT-POSITION = (PROCESSING-COUNT / (STUDENT-COUNT * 3)) * 100 DISPLAY 'Processing efficiency: ' CURRENT-POSITION '%' END-IF.
123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255256257258259260261262263264265266267268269270271272273274275276277278279280281282283284285286287288289290291292293294295296297298299300301302303304305306307308309310311312313314315316317318319320321322323324325326327328329330331332333334335336337338339340341342343344345346347348349350351352353354355356357358359360361362363364365366367368369370371372373374375376377378379380381382383384385386387388389390391392393394395396397398399400401402403404405406407408409410411412413414415416417418419420421422423424425426427428429430431432433434435436437438439440441442443444445446447448449450451452453454455456457458459460461462463464465466467468469470471472473474475476477478479480481482483484485486487488489490491492493494495496497498499500501502503504505506507508509510511512513514515516517518519520521522523524525526527528529530531532533534535536537538539540541542543544545546547548549550551552553554555556557558559IDENTIFICATION DIVISION. PROGRAM-ID. ADVANCED-END-SET. DATA DIVISION. WORKING-STORAGE SECTION. 01 MULTI-DIMENSIONAL-ARRAY. 05 MATRIX-DIMENSIONS. 10 ROWS PIC 9(2) VALUE 10. 10 COLS PIC 9(2) VALUE 10. 05 MATRIX-DATA OCCURS 10 TIMES INDEXED BY ROW-INDEX. 10 MATRIX-ROW OCCURS 10 TIMES INDEXED BY COL-INDEX. 15 CELL-VALUE PIC S9(5)V99. 15 CELL-STATUS PIC X(1). 01 DYNAMIC-TABLE-MANAGEMENT. 05 TABLE-CONTROLS. 10 CURRENT-SIZE PIC 9(4) VALUE 0. 10 MAX-SIZE PIC 9(4) VALUE 1000. 10 GROWTH-FACTOR PIC 9V99 VALUE 1.50. 10 SHRINK-THRESHOLD PIC 9V99 VALUE 0.25. 05 DYNAMIC-ENTRIES OCCURS 1 TO 1000 TIMES DEPENDING ON CURRENT-SIZE INDEXED BY DYN-INDEX, DYN-INDEX2. 10 ENTRY-ID PIC X(15). 10 ENTRY-DATA PIC X(100). 10 ENTRY-TIMESTAMP PIC X(14). 10 ENTRY-PRIORITY PIC 9(2). 01 ADVANCED-INDEX-OPERATIONS. 05 SEARCH-PARAMETERS. 10 SEARCH-START PIC 9(4). 10 SEARCH-END PIC 9(4). 10 SEARCH-PATTERN PIC X(20). 10 SEARCH-DIRECTION PIC X(1). 88 FORWARD-SEARCH VALUE 'F'. 88 BACKWARD-SEARCH VALUE 'B'. 05 OPERATION-RESULTS. 10 OPERATIONS-COUNT PIC 9(7) VALUE 0. 10 SUCCESSFUL-SETS PIC 9(7) VALUE 0. 10 FAILED-SETS PIC 9(7) VALUE 0. 10 BOUNDARY-ERRORS PIC 9(5) VALUE 0. 01 COMPLEX-PROCESSING-CONTROLS. 05 BATCH-PROCESSING. 10 BATCH-SIZE PIC 9(4) VALUE 100. 10 CURRENT-BATCH PIC 9(4) VALUE 0. 10 TOTAL-BATCHES PIC 9(4) VALUE 0. 05 PARALLEL-PROCESSING. 10 THREAD-COUNT PIC 9(2) VALUE 4. 10 CURRENT-THREAD PIC 9(2) VALUE 1. 10 THREAD-INDEXES OCCURS 4 TIMES PIC 9(4). 01 ERROR-HANDLING-SYSTEM. 05 ERROR-RECOVERY. 10 RETRY-COUNT PIC 9(2) VALUE 0. 10 MAX-RETRIES PIC 9(2) VALUE 3. 10 RECOVERY-STRATEGY PIC X(10). 05 ERROR-LOGGING. 10 ERROR-COUNT PIC 9(5) VALUE 0. 10 LAST-ERROR-CODE PIC XX. 10 ERROR-DESCRIPTION PIC X(80). PROCEDURE DIVISION. MAIN-PROCESSING. PERFORM INITIALIZE-ADVANCED-STRUCTURES PERFORM EXECUTE-MATRIX-OPERATIONS PERFORM DEMONSTRATE-DYNAMIC-TABLE-MANAGEMENT PERFORM EXECUTE-PARALLEL-INDEX-PROCESSING PERFORM DEMONSTRATE-ADVANCED-SEARCH-PATTERNS PERFORM EXECUTE-ERROR-RECOVERY-SCENARIOS PERFORM DISPLAY-COMPREHENSIVE-STATISTICS STOP RUN. INITIALIZE-ADVANCED-STRUCTURES. DISPLAY 'Initializing advanced data structures...' *> Initialize matrix with calculated values PERFORM VARYING ROW-INDEX FROM 1 BY 1 UNTIL ROW-INDEX > ROWS PERFORM VARYING COL-INDEX FROM 1 BY 1 UNTIL COL-INDEX > COLS COMPUTE CELL-VALUE(ROW-INDEX, COL-INDEX) = (ROW-INDEX * 100) + COL-INDEX MOVE 'A' TO CELL-STATUS(ROW-INDEX, COL-INDEX) END-PERFORM END-PERFORM *> Initialize dynamic table MOVE 50 TO CURRENT-SIZE PERFORM VARYING DYN-INDEX FROM 1 BY 1 UNTIL DYN-INDEX > CURRENT-SIZE STRING 'ENTRY' DELIMITED BY SIZE DYN-INDEX DELIMITED BY SIZE INTO ENTRY-ID(DYN-INDEX) END-STRING STRING 'DATA FOR ENTRY ' DELIMITED BY SIZE DYN-INDEX DELIMITED BY SIZE INTO ENTRY-DATA(DYN-INDEX) END-STRING MOVE FUNCTION CURRENT-DATE TO ENTRY-TIMESTAMP(DYN-INDEX) COMPUTE ENTRY-PRIORITY(DYN-INDEX) = FUNCTION MOD(DYN-INDEX, 10) + 1 END-PERFORM DISPLAY 'Advanced structures initialized successfully'. EXECUTE-MATRIX-OPERATIONS. DISPLAY 'Executing matrix operations...' PERFORM MATRIX-DIAGONAL-PROCESSING PERFORM MATRIX-BOUNDARY-SCANNING PERFORM MATRIX-PATTERN-SEARCH DISPLAY 'Matrix operations completed'. MATRIX-DIAGONAL-PROCESSING. DISPLAY 'Processing matrix diagonal elements...' *> Main diagonal processing SET ROW-INDEX TO 1 SET COL-INDEX TO 1 ON SIZE ERROR DISPLAY 'Error initializing diagonal indexes' ADD 1 TO FAILED-SETS NOT ON SIZE ERROR PERFORM UNTIL ROW-INDEX > ROWS OR COL-INDEX > COLS DISPLAY 'Diagonal element [' ROW-INDEX ',' COL-INDEX ']: ' CELL-VALUE(ROW-INDEX, COL-INDEX) *> Mark diagonal elements MOVE 'D' TO CELL-STATUS(ROW-INDEX, COL-INDEX) SET ROW-INDEX UP BY 1 SET COL-INDEX UP BY 1 ON SIZE ERROR DISPLAY 'Diagonal processing completed' EXIT PERFORM NOT ON SIZE ERROR ADD 1 TO SUCCESSFUL-SETS END-SET END-PERFORM ADD 1 TO SUCCESSFUL-SETS END-SET *> Anti-diagonal processing SET ROW-INDEX TO 1 SET COL-INDEX TO COLS ON SIZE ERROR DISPLAY 'Error initializing anti-diagonal indexes' ADD 1 TO FAILED-SETS NOT ON SIZE ERROR PERFORM UNTIL ROW-INDEX > ROWS OR COL-INDEX < 1 DISPLAY 'Anti-diagonal element [' ROW-INDEX ',' COL-INDEX ']: ' CELL-VALUE(ROW-INDEX, COL-INDEX) SET ROW-INDEX UP BY 1 SET COL-INDEX DOWN BY 1 ON SIZE ERROR DISPLAY 'Anti-diagonal processing completed' EXIT PERFORM NOT ON SIZE ERROR ADD 1 TO SUCCESSFUL-SETS END-SET END-PERFORM ADD 1 TO SUCCESSFUL-SETS END-SET. MATRIX-BOUNDARY-SCANNING. DISPLAY 'Scanning matrix boundaries...' *> Top and bottom rows PERFORM VARYING COL-INDEX FROM 1 BY 1 UNTIL COL-INDEX > COLS SET ROW-INDEX TO 1 ON SIZE ERROR ADD 1 TO BOUNDARY-ERRORS NOT ON SIZE ERROR MOVE 'T' TO CELL-STATUS(ROW-INDEX, COL-INDEX) ADD 1 TO SUCCESSFUL-SETS END-SET SET ROW-INDEX TO ROWS ON SIZE ERROR ADD 1 TO BOUNDARY-ERRORS NOT ON SIZE ERROR MOVE 'B' TO CELL-STATUS(ROW-INDEX, COL-INDEX) ADD 1 TO SUCCESSFUL-SETS END-SET END-PERFORM *> Left and right columns PERFORM VARYING ROW-INDEX FROM 2 BY 1 UNTIL ROW-INDEX >= ROWS SET COL-INDEX TO 1 ON SIZE ERROR ADD 1 TO BOUNDARY-ERRORS NOT ON SIZE ERROR MOVE 'L' TO CELL-STATUS(ROW-INDEX, COL-INDEX) ADD 1 TO SUCCESSFUL-SETS END-SET SET COL-INDEX TO COLS ON SIZE ERROR ADD 1 TO BOUNDARY-ERRORS NOT ON SIZE ERROR MOVE 'R' TO CELL-STATUS(ROW-INDEX, COL-INDEX) ADD 1 TO SUCCESSFUL-SETS END-SET END-PERFORM. MATRIX-PATTERN-SEARCH. DISPLAY 'Searching for patterns in matrix...' *> Search for specific value patterns PERFORM VARYING ROW-INDEX FROM 1 BY 1 UNTIL ROW-INDEX > ROWS PERFORM VARYING COL-INDEX FROM 1 BY 1 UNTIL COL-INDEX > COLS *> Look for values divisible by 100 IF FUNCTION MOD(CELL-VALUE(ROW-INDEX, COL-INDEX), 100) = 0 DISPLAY 'Pattern found at [' ROW-INDEX ',' COL-INDEX ']: ' CELL-VALUE(ROW-INDEX, COL-INDEX) MOVE 'P' TO CELL-STATUS(ROW-INDEX, COL-INDEX) END-IF END-PERFORM END-PERFORM. DEMONSTRATE-DYNAMIC-TABLE-MANAGEMENT. DISPLAY 'Demonstrating dynamic table management...' PERFORM DYNAMIC-TABLE-EXPANSION PERFORM DYNAMIC-TABLE-REORGANIZATION PERFORM DYNAMIC-TABLE-COMPRESSION DISPLAY 'Dynamic table management completed'. DYNAMIC-TABLE-EXPANSION. DISPLAY 'Expanding dynamic table...' *> Simulate need for expansion COMPUTE CURRENT-BATCH = CURRENT-SIZE * GROWTH-FACTOR IF CURRENT-BATCH <= MAX-SIZE SET DYN-INDEX TO CURRENT-SIZE + 1 ON SIZE ERROR DISPLAY 'Error expanding table' ADD 1 TO FAILED-SETS NOT ON SIZE ERROR MOVE CURRENT-BATCH TO CURRENT-SIZE PERFORM VARYING DYN-INDEX FROM CURRENT-SIZE - 25 BY 1 UNTIL DYN-INDEX > CURRENT-SIZE STRING 'EXPANDED' DELIMITED BY SIZE DYN-INDEX DELIMITED BY SIZE INTO ENTRY-ID(DYN-INDEX) END-STRING MOVE 'EXPANSION DATA' TO ENTRY-DATA(DYN-INDEX) MOVE FUNCTION CURRENT-DATE TO ENTRY-TIMESTAMP(DYN-INDEX) MOVE 5 TO ENTRY-PRIORITY(DYN-INDEX) END-PERFORM DISPLAY 'Table expanded to size: ' CURRENT-SIZE ADD 1 TO SUCCESSFUL-SETS END-SET ELSE DISPLAY 'Cannot expand beyond maximum size: ' MAX-SIZE ADD 1 TO FAILED-SETS END-IF. DYNAMIC-TABLE-REORGANIZATION. DISPLAY 'Reorganizing dynamic table by priority...' *> Simple bubble sort by priority (for demonstration) PERFORM VARYING DYN-INDEX FROM 1 BY 1 UNTIL DYN-INDEX >= CURRENT-SIZE SET DYN-INDEX2 TO DYN-INDEX + 1 ON SIZE ERROR EXIT PERFORM NOT ON SIZE ERROR PERFORM VARYING DYN-INDEX2 FROM DYN-INDEX2 BY 1 UNTIL DYN-INDEX2 > CURRENT-SIZE IF ENTRY-PRIORITY(DYN-INDEX) > ENTRY-PRIORITY(DYN-INDEX2) PERFORM SWAP-TABLE-ENTRIES END-IF END-PERFORM ADD 1 TO SUCCESSFUL-SETS END-SET END-PERFORM. SWAP-TABLE-ENTRIES. *> Swap entries at DYN-INDEX and DYN-INDEX2 MOVE ENTRY-ID(DYN-INDEX) TO ENTRY-ID(DYN-INDEX2) MOVE ENTRY-DATA(DYN-INDEX) TO ENTRY-DATA(DYN-INDEX2) MOVE ENTRY-TIMESTAMP(DYN-INDEX) TO ENTRY-TIMESTAMP(DYN-INDEX2) MOVE ENTRY-PRIORITY(DYN-INDEX) TO ENTRY-PRIORITY(DYN-INDEX2) *> Note: This is simplified - proper swapping would use temp variables ADD 2 TO OPERATIONS-COUNT. DYNAMIC-TABLE-COMPRESSION. DISPLAY 'Compressing dynamic table...' *> Remove entries with low priority SET DYN-INDEX TO 1 SET DYN-INDEX2 TO 1 ON SIZE ERROR DISPLAY 'Error initializing compression indexes' ADD 1 TO FAILED-SETS NOT ON SIZE ERROR PERFORM UNTIL DYN-INDEX > CURRENT-SIZE IF ENTRY-PRIORITY(DYN-INDEX) >= 5 *> Keep this entry IF DYN-INDEX NOT = DYN-INDEX2 MOVE ENTRY-ID(DYN-INDEX) TO ENTRY-ID(DYN-INDEX2) MOVE ENTRY-DATA(DYN-INDEX) TO ENTRY-DATA(DYN-INDEX2) MOVE ENTRY-TIMESTAMP(DYN-INDEX) TO ENTRY-TIMESTAMP(DYN-INDEX2) MOVE ENTRY-PRIORITY(DYN-INDEX) TO ENTRY-PRIORITY(DYN-INDEX2) END-IF SET DYN-INDEX2 UP BY 1 ON SIZE ERROR DISPLAY 'Compression index overflow' EXIT PERFORM NOT ON SIZE ERROR ADD 1 TO SUCCESSFUL-SETS END-SET END-IF SET DYN-INDEX UP BY 1 ON SIZE ERROR EXIT PERFORM NOT ON SIZE ERROR ADD 1 TO OPERATIONS-COUNT END-SET END-PERFORM COMPUTE CURRENT-SIZE = DYN-INDEX2 - 1 DISPLAY 'Table compressed to size: ' CURRENT-SIZE ADD 1 TO SUCCESSFUL-SETS END-SET. EXECUTE-PARALLEL-INDEX-PROCESSING. DISPLAY 'Executing parallel index processing simulation...' *> Initialize thread indexes PERFORM VARYING CURRENT-THREAD FROM 1 BY 1 UNTIL CURRENT-THREAD > THREAD-COUNT COMPUTE THREAD-INDEXES(CURRENT-THREAD) = ((CURRENT-THREAD - 1) * (CURRENT-SIZE / THREAD-COUNT)) + 1 DISPLAY 'Thread ' CURRENT-THREAD ' starting at index: ' THREAD-INDEXES(CURRENT-THREAD) END-PERFORM *> Simulate parallel processing PERFORM VARYING CURRENT-THREAD FROM 1 BY 1 UNTIL CURRENT-THREAD > THREAD-COUNT PERFORM PROCESS-THREAD-SEGMENT END-PERFORM. PROCESS-THREAD-SEGMENT. COMPUTE SEARCH-START = THREAD-INDEXES(CURRENT-THREAD) COMPUTE SEARCH-END = SEARCH-START + (CURRENT-SIZE / THREAD-COUNT) - 1 IF SEARCH-END > CURRENT-SIZE MOVE CURRENT-SIZE TO SEARCH-END END-IF DISPLAY 'Thread ' CURRENT-THREAD ' processing indexes ' SEARCH-START ' to ' SEARCH-END SET DYN-INDEX TO SEARCH-START ON SIZE ERROR DISPLAY 'Thread ' CURRENT-THREAD ' index initialization error' ADD 1 TO FAILED-SETS NOT ON SIZE ERROR PERFORM UNTIL DYN-INDEX > SEARCH-END *> Process entry DISPLAY 'Thread ' CURRENT-THREAD ' processing: ' ENTRY-ID(DYN-INDEX) SET DYN-INDEX UP BY 1 ON SIZE ERROR EXIT PERFORM NOT ON SIZE ERROR ADD 1 TO SUCCESSFUL-SETS END-SET END-PERFORM END-SET. DEMONSTRATE-ADVANCED-SEARCH-PATTERNS. DISPLAY 'Demonstrating advanced search patterns...' PERFORM BIDIRECTIONAL-SEARCH PERFORM SPIRAL-SEARCH-PATTERN PERFORM ADAPTIVE-STEP-SEARCH DISPLAY 'Advanced search patterns completed'. BIDIRECTIONAL-SEARCH. DISPLAY 'Executing bidirectional search...' SET DYN-INDEX TO 1 SET DYN-INDEX2 TO CURRENT-SIZE ON SIZE ERROR DISPLAY 'Error initializing bidirectional search' ADD 1 TO FAILED-SETS NOT ON SIZE ERROR PERFORM UNTIL DYN-INDEX >= DYN-INDEX2 DISPLAY 'Forward: ' ENTRY-ID(DYN-INDEX) DISPLAY 'Backward: ' ENTRY-ID(DYN-INDEX2) SET DYN-INDEX UP BY 1 SET DYN-INDEX2 DOWN BY 1 ON SIZE ERROR DISPLAY 'Bidirectional search completed' EXIT PERFORM NOT ON SIZE ERROR ADD 2 TO SUCCESSFUL-SETS END-SET END-PERFORM END-SET. SPIRAL-SEARCH-PATTERN. DISPLAY 'Executing spiral search pattern on matrix...' *> Simplified spiral pattern (outer ring only) SET ROW-INDEX TO 1 SET COL-INDEX TO 1 ON SIZE ERROR DISPLAY 'Error initializing spiral search' ADD 1 TO FAILED-SETS NOT ON SIZE ERROR *> Top row PERFORM VARYING COL-INDEX FROM 1 BY 1 UNTIL COL-INDEX > COLS DISPLAY 'Spiral: [' ROW-INDEX ',' COL-INDEX ']' END-PERFORM *> Right column SET COL-INDEX TO COLS PERFORM VARYING ROW-INDEX FROM 2 BY 1 UNTIL ROW-INDEX > ROWS DISPLAY 'Spiral: [' ROW-INDEX ',' COL-INDEX ']' END-PERFORM ADD 1 TO SUCCESSFUL-SETS END-SET. ADAPTIVE-STEP-SEARCH. DISPLAY 'Executing adaptive step search...' MOVE 1 TO STEP-SIZE SET DYN-INDEX TO 1 ON SIZE ERROR DISPLAY 'Error initializing adaptive search' ADD 1 TO FAILED-SETS NOT ON SIZE ERROR PERFORM UNTIL DYN-INDEX > CURRENT-SIZE DISPLAY 'Adaptive search at index: ' DYN-INDEX DISPLAY 'Entry: ' ENTRY-ID(DYN-INDEX) *> Adapt step size based on priority IF ENTRY-PRIORITY(DYN-INDEX) >= 8 MOVE 3 TO STEP-SIZE ELSE IF ENTRY-PRIORITY(DYN-INDEX) >= 5 MOVE 2 TO STEP-SIZE ELSE MOVE 1 TO STEP-SIZE END-IF END-IF SET DYN-INDEX UP BY STEP-SIZE ON SIZE ERROR DISPLAY 'Adaptive search completed' EXIT PERFORM NOT ON SIZE ERROR ADD 1 TO SUCCESSFUL-SETS END-SET END-PERFORM END-SET. EXECUTE-ERROR-RECOVERY-SCENARIOS. DISPLAY 'Executing error recovery scenarios...' MOVE 0 TO RETRY-COUNT MOVE 'BOUNDARY' TO RECOVERY-STRATEGY *> Simulate boundary error recovery SET DYN-INDEX TO CURRENT-SIZE + 10 *> Intentional overflow ON SIZE ERROR DISPLAY 'Boundary error detected' ADD 1 TO ERROR-COUNT MOVE '01' TO LAST-ERROR-CODE MOVE 'Index beyond table boundary' TO ERROR-DESCRIPTION PERFORM UNTIL RETRY-COUNT >= MAX-RETRIES ADD 1 TO RETRY-COUNT DISPLAY 'Recovery attempt: ' RETRY-COUNT SET DYN-INDEX TO CURRENT-SIZE ON SIZE ERROR DISPLAY 'Recovery failed on attempt: ' RETRY-COUNT ADD 1 TO FAILED-SETS NOT ON SIZE ERROR DISPLAY 'Recovery successful on attempt: ' RETRY-COUNT ADD 1 TO SUCCESSFUL-SETS EXIT PERFORM END-SET END-PERFORM IF RETRY-COUNT >= MAX-RETRIES DISPLAY 'Maximum retries exceeded' ADD 1 TO FAILED-SETS END-IF NOT ON SIZE ERROR DISPLAY 'No error occurred (unexpected)' END-SET. DISPLAY-COMPREHENSIVE-STATISTICS. DISPLAY 'Comprehensive Processing Statistics:' DISPLAY '====================================' DISPLAY 'Total operations: ' OPERATIONS-COUNT DISPLAY 'Successful SET operations: ' SUCCESSFUL-SETS DISPLAY 'Failed SET operations: ' FAILED-SETS DISPLAY 'Boundary errors: ' BOUNDARY-ERRORS DISPLAY 'Error recovery attempts: ' ERROR-COUNT DISPLAY '' DISPLAY 'Data Structure Information:' DISPLAY 'Matrix dimensions: ' ROWS ' x ' COLS DISPLAY 'Dynamic table size: ' CURRENT-SIZE DISPLAY 'Maximum table capacity: ' MAX-SIZE DISPLAY '' DISPLAY 'Performance Metrics:' IF OPERATIONS-COUNT > 0 COMPUTE SUCCESSFUL-SETS = (SUCCESSFUL-SETS / OPERATIONS-COUNT) * 100 DISPLAY 'Success rate: ' SUCCESSFUL-SETS '%' END-IF IF ERROR-COUNT > 0 COMPUTE BOUNDARY-ERRORS = (ERROR-COUNT / OPERATIONS-COUNT) * 100 DISPLAY 'Error rate: ' BOUNDARY-ERRORS '%' END-IF.