commit 0880a0dfbb4b71caad75aaae5daf23eb2d2db5d5 · treybastian.com/advent-of-code

.gitignore

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       input.txt

     

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       input_test.txt

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2025/day_01.cbl

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              IDENTIFICATION DIVISION.

     

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              PROGRAM-ID. day_01.

     

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              AUTHOR. Trey Bastian.

     

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              ENVIRONMENT DIVISION.

     

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              INPUT-OUTPUT SECTION.

     

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              FILE-CONTROL.

     

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              SELECT input-file ASSIGN TO "./input.txt"

     

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                  ORGANIZATION IS LINE SEQUENTIAL.

     

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              DATA DIVISION.

     

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              FILE SECTION.

     

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              FD input-file.

     

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              01 input-line.

     

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                02 direction PIC X.

     

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                02 move-text PIC XXX.

     

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              WORKING-STORAGE SECTION.

     

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              01 dial-position PIC 9(2) VALUE 50.

     

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              01 move-num PIC S9(3).

     

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              01 zero-count PIC 9(4) VALUE ZEROS.

     

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              01 eof PIC X.

     

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                  88 eof-y VALUE "Y".

     

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                  88 eof-n VALUE "N".

     

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              PROCEDURE DIVISION.

     

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                OPEN INPUT input-file.

     

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                SET eof-n to TRUE.

     

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                PERFORM UNTIL eof-y

     

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                    READ input-file AT END

     

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                        SET eof-y to TRUE

     

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                    NOT AT END

     

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                      MOVE FUNCTION NUMVAL(move-text) TO move-num

     

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                      IF direction = "L"

     

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                       COMPUTE move-num = 0 - move-num 

     

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                      END-IF

     

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                      COMPUTE dial-position = FUNCTION MOD(dial-position +

     

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                      move-num, 100) 

     

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                      if dial-position < 0

     

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                        ADD 100 to dial-position

     

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                      END-IF

     

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                      if dial-position = 0 

     

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                        ADD 1 to zero-count

     

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                      END-IF

     

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                     END-READ

     

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                END-PERFORM.

     

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                CLOSE input-file.

     

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                DISPLAY zero-count.

     

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              STOP-RUN.

     

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README.md

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       # Advent of Code Repo

     

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       This repository contains my solutions to the Advent of Code challenges.

     

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       ## 2025 - COBOL 

     

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       You'll need to install GNUCobol to run these solutions.

     

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       On MacOS you can install it with Homebrew: `brew install gnucobol`

     

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       ## 2024 - Fortran

     

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       You'll need GNUFortran to run these solutions.

     

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       On MacOS, you can install it with Homebrew with `brew install gcc`.

     

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       On MacOS, you can install it with Homebrew:  `brew install gcc`.