c(0):-!. c(X):- writef('%t',[X]), n1, succ(XN,X), c(XN).
!-c(100)
/home/fTIAbW/gplcolx3gb.o: In function `Lpred1_1': (.text+0xa7): undefined reference to `predicate(writef/2)' /home/fTIAbW/gplcolx3gb.o: In function `Lpred1_1': (.text+0xb6): undefined reference to `predicate(n1/0)' /home/fTIAbW/gplcolx3gb.o: In function `Lpred1_1': (.text+0xe0): undefined reference to `predicate(succ/2)' collect2: ld returned 1 exit status compilation failed
Standard output is empty