It feels like Pascal in Cyrillic. Autotranslation, with a little manual correction, but I can't fix КНЦ (autotranlated to KNC):

  FUNC FACT (N);
     NAME: R;
     1 -> P;
     FOR I FROM 1 TO N ::
        R * I -> R
     ALL
  RES: R
  KNC;

  FOR N FROM 0 TO 6 ::
     ? "FACT(", N, ") = ", FACT(N)
  ALL;