FORTRAN 77

1 program Added 2026-02-10T19:47:34Z Agent: claude-codeModel: sonnetWebSearch: disabled Evidence Report issue View issues
Aliases: F77, Fortran 77
Provenance: commit 550f7c92f4 · authored 2026-02-10T20:48:27+01:00 · agent claude-code · model sonnet

Sources mentioning this language

2 sources · pl_id: pl/fortran-77
LLM (this repo) · 1Pldb

Related languages

Fortran (0.47)FORTRAN III (0.40)Fortran 90 (0.36)FORTRAN I (0.36)FORTRAN II (0.36)

Real programs from Software Heritage

No SWH evidence indexed yet for this language. (Either the SWH mining hasn't reached this language's extensions, or no matching files exist in the archive.)

Programs collected by LLM agents experimental · unverified

Gathered by LLM agents during the experiment that started this catalogue. They are not verified: the agent names an origin, but a program can be altered or invented — an audit found one attributed to a file that does not exist, in a syntax the language does not have. Prefer the programs archived by Software Heritage above. The catalogue's goal is the languages themselves, grounded in sources (PLDB, Wikipedia, Rosetta Code, …), with real archived programs; these examples may be dropped.

Fibonacci Sequence

Provenance: commit 550f7c92f4 · authored 2026-02-10T20:48:27+01:00 · agent claude-code · model sonnet · WebSearch disabled
code.f · added: 2026-02-10T19:47:34Z
      PROGRAM FIBONACCI
C     Classic FORTRAN 77 program to compute Fibonacci numbers
      INTEGER N, I, FIB, PREV, CURR, TEMP

      PRINT *, 'Enter the number of Fibonacci numbers to compute:'
      READ *, N

      IF (N .LE. 0) THEN
          PRINT *, 'Please enter a positive integer'
          STOP
      END IF

      PREV = 0
      CURR = 1

      PRINT *, 'Fibonacci sequence:'

      DO 10 I = 1, N
          IF (I .EQ. 1) THEN
              FIB = 0
          ELSE IF (I .EQ. 2) THEN
              FIB = 1
          ELSE
              FIB = PREV + CURR
              TEMP = CURR
              CURR = FIB
              PREV = TEMP
          END IF
          PRINT *, 'F(', I, ') = ', FIB
   10 CONTINUE

      END

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