std::isupper(std::locale)
From cppreference.com
Defined in header
<locale>
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template< class charT >
bool isupper( charT ch, const locale& loc ); |
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Checks if the given character is classified as an uppercase alphabetic character by the given locale's std::ctype facet.
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[edit] Parameters
ch | - | character |
loc | - | locale |
[edit] Return value
Returns true if the character is classified as uppercase, false otherwise.
[edit] Possible implementation
template< class charT > bool isupper( charT ch, const std::locale& loc ) { return std::use_facet<std::ctype<charT>>(loc).is(std::ctype_base::upper, ch); } |
[edit] Example
Demonstrates the use of isupper() with different locales (OS-specific).
Run this code
#include <iostream> #include <locale> int main() { const wchar_t c = L'\u00de'; // capital letter thorn std::locale loc1("C"); std::cout << "isupper('Þ', C locale) returned " << std::boolalpha << std::isupper(c, loc1) << '\n'; std::locale loc2("en_US.UTF8"); std::cout << "isupper('Þ', Unicode locale) returned " << std::boolalpha << std::isupper(c, loc2) << '\n'; }
Output:
isupper('Þ', C locale) returned false isupper('Þ', Unicode locale) returned true
[edit] See also
checks if a character is an uppercase character (function) |
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checks if a wide character is an uppercase character (function) |