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Text File  |  1986-09-19  |  197b  |  13 lines
  1. /* adapted for Turbo Prolog */
  2. predicates
  3.   f(integer)
  4.   test
  5. clauses  
  6.   f(X) :- write(X), nl, 
  7.           Y=X+1, 
  8.           f(Y), 
  9.           write(Y), nl.
  10.   test :- f(1).
  11. goal
  12.   test.
  13.