在Win

本文介绍了在Win-Prolog中读取字符串并挑选出字符串中的每个单词的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 问题描述

我整天都在互联网上度过，但是我无法在Win-Prolog中找到任何可以断定字符串中每个单词的内置谓词.

I've spend whole day on the internet and I wasn't able to find any built-in predicate in Win-Prolog that can single out every word in a String.

示例:

| ?- read(X). |: 'this is a string'. X = 'this is a string'.

是否有任何我可以使用的谓词可以帮助我，挑出字符串中的每个单词?喜欢

is there any predicate I can use that will help me, single out every word of in the string? like

A = this B = is C = a D = string

或列表

A = [This, is, a, string]

有可能吗?

推荐答案

在Win-Prolog中，您可以使用:

In Win-Prolog you might use:

split_string(String, List):- string_chars(String, LChar), split_string(List, LWord-LWord, LChar, []). split_string([Word|TailWords], LWord-[])--> " ", {string_chars(Word, LWord)}, split_string(TailWords, NLWord-NLWord). split_string(Words, Head-[Char|LWord]) --> [Char], {[Char] \= " "}, split_string(Words, Head-LWord). split_string([Word], LWord-[])--> [], { string_chars(Word, LWord)}.

在SWI-Prolog中，您可以使用 atomic_list_concat(List，''，'this is a string').

In SWI-Prolog you can use atomic_list_concat(List, ' ', 'this is a string').