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Power-Programmierung
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CD1.mdf
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prolog
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library
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prolo_c
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exampl48.pro
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Text File
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1986-10-06
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495b
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25 lines
/* Program 48 */
/*
Enter the goal:
scanner("hello world",X).
*/
domains
tok = numb(integer);char(char);name(string)
tokl = tok*
predicates
scanner(string,tokl)
maketok(string,tok)
clauses
scanner("",[]).
scanner(Str,[Tok|Rest]):-
fronttoken(Str,Sym,Str1),
maketok(Sym,Tok),
scanner(Str1,Rest).
maketok(S,name(S)):- isname(S).
maketok(S,numb(N)):- str_int(S,N).
maketok(S,char(C)):- str_Char(S,C).