问题描述
如何在 Turbo Prolog 中将字符串转换为大写和小写.
How do I convert a string to Upper and to Lower case in Turbo Prolog.
string_upper
和 string_lower
函数用于 SWI Prolog,
string_upper
and string_lower
function is for SWI Prolog,
我发现了类似的东西,
tolower([], []).
tolower([Upper|UpperTail], [Lower|LowerTail]) :-
char_type(Lower, to_lower(Upper)),
tolower(UpperTail, LowerTail).
但是没弄明白到底是什么.谁能帮我解决这个问题.
But didn't get what exactly it is. Can anyone help me solve this.
推荐答案
我是用 upper_lower() 做到的,
I did it using upper_lower(),
write("Enter string to convert\n"),
readln(Str1),
upper_lower(Str1,Low),
write("In lower case "),
write(Low),nl,
write("In Upper Case "),
upper_lower(Upp,Str1),
write(Upp).
upper_lower 谓词:upper_lower 谓词可用于将大写字符转换为小写,或将小写字母转换为大写.谓词的一般形式是upper_lower(UpperCaseString,LowerCaseUpperCaseString)
The upper_lower Predicate:The upper_lower predicate can be used to convert uppercase characters to lowercase, or lowercase letters to uppercase. The general form of the predicate isupper_lower(UpperCaseString, LowerCaseUpperCaseString)
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