Difference between revisions of "cpp/locale/islower"
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| − | + | Checks if the given character is classified as a lowercase alphabetic character by the given locale's {{lc|std::ctype}} facet. | |
| − | Checks if the given character classified as a lowercase alphabetic character by the given locale's {{lc|std::ctype}} facet. | + | |
===Parameters=== | ===Parameters=== | ||
Revision as of 06:50, 7 March 2015
| Defined in header <locale>
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| template< class charT > bool islower( charT ch, const locale& loc ); |
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Checks if the given character is classified as a lowercase alphabetic character by the given locale's std::ctype facet.
Contents |
Parameters
| ch | - | character |
| loc | - | locale |
Return value
Returns true if the character is classified as lowercase, false otherwise.
Possible implementation
template< class charT > bool islower( charT ch, const std::locale& loc ) { return std::use_facet<std::ctype<charT>>(loc).is(std::ctype_base::lower, ch); } |
Example
Demonstrates the use of islower() with different locales (OS-specific).
Run this code
#include <iostream> #include <locale> int main() { const wchar_t c = L'\u03c0'; // greek small letter pi std::locale loc1("C"); std::cout << "islower('π', C locale) returned " << std::boolalpha << std::islower(c, loc1) << '\n'; std::locale loc2("en_US.UTF8"); std::cout << "islower('π', Unicode locale) returned " << std::boolalpha << std::islower(c, loc2) << '\n'; }
Output:
islower('π', C locale) returned false
islower('π', Unicode locale) returned trueSee also
| checks if a character is lowercase (function) | |
| checks if a wide character is lowercase (function) |
