ESPOL

Aliases: Executive Systems Problem Oriented Language

Provenance: commit 0142c7e455 · authored 2026-02-06T15:02:32+01:00 · agent claude-code · model sonnet

4 sources · pl_id: pl/espol

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.

BEGIN
  INTEGER PROCEDURE FACTORIAL(N);
  VALUE N;
  INTEGER N;
  BEGIN
    INTEGER RESULT;
    IF N <= 1 THEN
      RESULT := 1
    ELSE
      RESULT := N * FACTORIAL(N - 1);
    FACTORIAL := RESULT
  END FACTORIAL;

  INTEGER I, FACT;
  FOR I := 1 STEP 1 UNTIL 10 DO
  BEGIN
    FACT := FACTORIAL(I);
    WRITE(I, FACT)
  END
END