function template
<locale>
std::isspace
template <class charT> bool isspace (charT c, const locale& loc);
Check if character is a white-space using locale
Checks whether c is a white-space character using the ctype facet of locale loc, returning the same as if ctype::is is called as:
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| use_facet < ctype<charT> > (loc).is (ctype_base::space, c)
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This function template overloads the C function isspace (defined in <cctype>).
Parameters
- c
- Character to be checked.
- loc
- Locale to be used. It shall have a ctype facet.
The template argument charT is the character type.
Return Value
true if indeed c is a white-space character.
false otherwise.
Example
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| // isspace example (C++) #include <iostream> // std::cout #include <string> // std::string #include <locale> // std::locale, std::isspace int main () { std::locale loc; std::string str="Example sentence to test isspace\n"; char c; for (std::string::size_type i=0; i<str.length(); ++i) { c=str[i]; if (std::isspace(c,loc)) c='\n'; std::cout << c; } return 0; }
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Output:
Example sentence to test isspace |
Data races
Both loc and its ctype facet are accessed.
Exception safety
Strong guarantee: if an exception is thrown, there are no effects.
See also
- ctype
- Character type facet (class template)
- isspace (cctype)
- Check if character is a white-space (function)
- isgraph
- Check if character has graphical representation using locale (function template)
- ispunct
- Check if character is a punctuation character using locale (function template)
- isalnum
- Check if character is alphanumeric using locale (function template)