add samples
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@ -1,6 +1,5 @@
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typedef enum {
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typedef enum {
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TOKEN_EOF = 0,
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TOKEN_EOF = 0,
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// Identification Keywords
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TOKEN_IDENTIFICATION,
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TOKEN_IDENTIFICATION,
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TOKEN_KEYWORD_DIVISION,
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TOKEN_KEYWORD_DIVISION,
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TOKEN_KEYWORD_DATA,
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TOKEN_KEYWORD_DATA,
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@ -8,8 +7,6 @@ typedef enum {
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TOKEN_PROGRAM_ID,
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TOKEN_PROGRAM_ID,
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TOKEN_WORKING_STORAGE,
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TOKEN_WORKING_STORAGE,
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TOKEN_PROCEDURE,
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TOKEN_PROCEDURE,
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// Program Keywords
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TOKEN_DISPLAY,
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TOKEN_DISPLAY,
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TOKEN_STOP,
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TOKEN_STOP,
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TOKEN_RUN,
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TOKEN_RUN,
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@ -28,11 +25,7 @@ typedef enum {
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TOKEN_KEYWORD_VALUE,
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TOKEN_KEYWORD_VALUE,
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TOKEN_KEYWORD_COMPUTE,
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TOKEN_KEYWORD_COMPUTE,
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TOKEN_KEYWORD_FUNCTION,
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TOKEN_KEYWORD_FUNCTION,
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// Identifiers
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TOKEN_IDENT,
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TOKEN_IDENT,
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// Data types
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TOKEN_STRING,
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TOKEN_STRING,
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TOKEN_INTEGER,
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TOKEN_INTEGER,
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TOKEN_PICTURE,
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TOKEN_PICTURE,
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@ -40,19 +33,14 @@ typedef enum {
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TOKEN_NUMERIC,
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TOKEN_NUMERIC,
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TOKEN_SIGNED_NUMERIC,
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TOKEN_SIGNED_NUMERIC,
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TOKEN_IMPLIED_DECIMAL,
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TOKEN_IMPLIED_DECIMAL,
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// https://ibmmainframes.com/about393.html
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TOKEN_COMPUTATION_LEVEL_0,
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TOKEN_COMPUTATION_LEVEL_0,
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TOKEN_COMPUTATION_LEVEL_1,
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TOKEN_COMPUTATION_LEVEL_1,
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TOKEN_COMPUTATION_LEVEL_2,
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TOKEN_COMPUTATION_LEVEL_2,
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TOKEN_COMPUTATION_LEVEL_3,
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TOKEN_COMPUTATION_LEVEL_3,
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// Grammar
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TOKEN_LEFT_PARENTHESIS,
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TOKEN_LEFT_PARENTHESIS,
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TOKEN_RIGHT_PARENTHESIS,
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TOKEN_RIGHT_PARENTHESIS,
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TOKEN_DOT,
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TOKEN_DOT,
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TOKEN_COMMENT,
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TOKEN_COMMENT,
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// Operators
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TOKEN_ADD,
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TOKEN_ADD,
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TOKEN_SUB,
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TOKEN_SUB,
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TOKEN_MULTIPLY,
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TOKEN_MULTIPLY,
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@ -0,0 +1,5 @@
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IDENTIFICATION DIVISION.
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PROGRAM-ID. HELLO-WORLD.
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PROCEDURE DIVISION.
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DISPLAY 'Hello World!'
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STOP RUN.
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@ -1 +0,0 @@
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2020+4;
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*> Code altered from https://www.quora.com/What-is-a-COBOL-program-that-will-solve-a-quadratic-equation
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*> Program finds the roots to a simple quadratic equation
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IDENTIFICATION DIVISION.
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PROGRAM-ID. QuadraticSolver.
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DATA DIVISION.
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WORKING-STORAGE SECTION.
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77 a PIC S9(5)V9(5) COMP-3 VALUE 1.
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77 b PIC S9(5)V9(5) COMP-3 VALUE 5.
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77 c PIC S9(5)V9(5) COMP-3 VALUE 6.
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77 discriminant PIC S9(5)V9(5) COMP-3.
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77 root1 PIC S9(5)V9(5) COMP-3.
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77 root2 PIC S9(5)V9(5) COMP-3.
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77 square-root-discriminant PIC S9(5)V9(5) COMP-3.
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PROCEDURE DIVISION. *> program begins here
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DISPLAY "EQUATION: (1x^2) + 5x + 6 = 0"
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COMPUTE discriminant = (b ** 2) - (4 * a * c)
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IF discriminant > 0
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COMPUTE square-root-discriminant = FUNCTION SQRT(discriminant)
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COMPUTE root1 = (-b + square-root-discriminant) / (2 * a)
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COMPUTE root2 = (-b - square-root-discriminant) / (2 * a)
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DISPLAY "The equation has two distinct real roots: "
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DISPLAY "Root 1: " root1
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DISPLAY "Root 2: " root2
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ELSE IF discriminant = 0
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COMPUTE root1 = -b / (2 * a)
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DISPLAY "The equation has one real root: "
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DISPLAY "Root: " root1
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ELSE
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DISPLAY "The equation has no real roots."
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STOP RUN.
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@ -0,0 +1,55 @@
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IDENTIFICATION DIVISION.
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PROGRAM-ID. sorting.
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DATA DIVISION.
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WORKING-STORAGE SECTION.
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01 WS-SORT-AREA.
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05 WS-SORT-TABLE.
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10 WS-SORT-ROW PIC X(10) OCCURS 100.
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05 WS-TEMP-ROW PIC X(10).
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05 WS-ROW-MAX PIC S9(4) COMP VALUE 100.
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05 WS-SORT-MAX PIC S9(4) COMP.
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05 WS-I PIC S9(4) COMP.
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05 WS-J PIC S9(4) COMP.
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05 WS-INDEX PIC S9(4) COMP.
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PROCEDURE DIVISION.
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*> Initialize test data
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MOVE "30" TO WS-SORT-ROW(1)
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MOVE "10" TO WS-SORT-ROW(2)
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MOVE "50" TO WS-SORT-ROW(3)
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MOVE "20" TO WS-SORT-ROW(4)
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MOVE "40" TO WS-SORT-ROW(5)
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MOVE 5 TO WS-SORT-MAX
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*> * Display original array
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DISPLAY "Original Array Contents:"
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DISPLAY "---------------------"
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PERFORM VARYING WS-INDEX FROM 1 BY 1
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UNTIL WS-INDEX > WS-SORT-MAX
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DISPLAY "Element " WS-INDEX ": " WS-SORT-ROW(WS-INDEX)
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END-PERFORM
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DISPLAY SPACE
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*> * Simplified bubble sort
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PERFORM VARYING WS-I FROM 1 BY 1
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UNTIL WS-I > WS-SORT-MAX - 1
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PERFORM VARYING WS-J FROM 1 BY 1
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UNTIL WS-J > WS-SORT-MAX - WS-I
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IF WS-SORT-ROW(WS-J) > WS-SORT-ROW(WS-J + 1)
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MOVE WS-SORT-ROW(WS-J) TO WS-TEMP-ROW
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MOVE WS-SORT-ROW(WS-J + 1) TO WS-SORT-ROW(WS-J)
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MOVE WS-TEMP-ROW TO WS-SORT-ROW(WS-J + 1)
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END-IF
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END-PERFORM
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END-PERFORM
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*> * Display sorted array
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DISPLAY "Sorted Array Contents:"
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DISPLAY "--------------------"
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PERFORM VARYING WS-INDEX FROM 1 BY 1
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UNTIL WS-INDEX > WS-SORT-MAX
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DISPLAY "Element " WS-INDEX ": " WS-SORT-ROW(WS-INDEX)
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END-PERFORM.
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STOP RUN.
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