std::isupper
De cppreference.com
![]() |
This page has been machine-translated from the English version of the wiki using Google Translate.
The translation may contain errors and awkward wording. Hover over text to see the original version. You can help to fix errors and improve the translation. For instructions click here. |
Defined in header <cctype>
|
||
int isupper( int ch ); |
||
Comprueba si el carácter dado es un carácter en mayúscula de acuerdo con la actual configuración regional C. En el valor predeterminado "C",
isupper
devuelve true sólo para las letras mayúsculas (ABCDEFGHIJKLMNOPQRSTUVWXYZ
) .Original:
Checks if the given character is an uppercase character according to the current C locale. In the default "C" locale,
isupper
returns true only for the uppercase letters (ABCDEFGHIJKLMNOPQRSTUVWXYZ
).The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
You can help to correct and verify the translation. Click here for instructions.
Si vuelve
isupper
true, se garantiza que iscntrl, isdigit, ispunct y isspace retorno false para el mismo personaje en la misma localidad C .Original:
If
isupper
returns true, it is guaranteed that iscntrl, isdigit, ispunct, and isspace return false for the same character in the same C locale.The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
You can help to correct and verify the translation. Click here for instructions.
Contenido |
[editar] Parámetros
ch | - | carácter
Original: character The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. |
[editar] Valor de retorno
Valor distinto de cero (true) si el carácter es una letra mayúscula,
0
(false) de otra manera .Original:
Non-zero value (true) if the character is an uppercase letter,
0
(false) otherwise.The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
You can help to correct and verify the translation. Click here for instructions.
[editar] Ejemplo
#include <iostream> #include <cctype> #include <clocale> int main() { char c = '\xc6'; // letter Æ in ISO-8859-1 std::cout << "isupper(\'\\xc6\', default C locale) returned " << std::boolalpha << (bool)std::isupper(c) << '\n'; std::setlocale(LC_ALL, "en_GB.iso88591"); std::cout << "isupper(\'\\xc6\', ISO-8859-1 locale) returned " << std::boolalpha << (bool)std::isupper(c) << '\n'; }
Output:
isupper('\xc6', default C locale) returned false isupper('\xc6', ISO-8859-1 locale) returned true
[editar] Ver también
Comprueba si un carácter está clasificado como mayúscula por una configuración regional Original: checks if a character is classified as uppercase by a locale The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (función de plantilla) | |
Comprueba si un carácter ancho es un carácter en mayúscula Original: checks if a wide character is an uppercase character The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (función) | |
C documentation for isupper
|
ASCII values (hex) |
characters |
isupper |
||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
0 - 8 | 0x00-0x08
|
control codes (NUL , etc.)
|
≠0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
9 | 0x09
|
tab (\t )
|
≠0
|
0
|
≠0
|
≠0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
10 - 13 | 0x0A-0x0D
|
whitespaces (\n ,\v ,\f ,\r )
|
≠0
|
0
|
≠0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
14 - 31 | 0x0E-0x1F
|
control codes | ≠0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
32 | 0x20
|
space | 0
|
≠0
|
≠0
|
≠0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
33 - 47 | 0x21-0x2F
|
!"#$%&'()*+,-./
|
0
|
≠0
|
0
|
0
|
≠0
|
≠0
|
0
|
0
|
0
|
0
|
0
|
0
|
48 - 57 | 0x30-0x39
|
0123456789
|
0
|
≠0
|
0
|
0
|
≠0
|
0
|
≠0
|
0
|
0
|
0
|
≠0
|
≠0
|
58 - 64 | 0x3a-0x40
|
:;<=>?@
|
0
|
≠0
|
0
|
0
|
≠0
|
≠0
|
0
|
0
|
0
|
0
|
0
|
0
|
65 - 70 | 0x41-0x46
|
ABCDEF
|
0
|
≠0
|
0
|
0
|
≠0
|
0
|
≠0
|
≠0
|
≠0
|
0
|
0
|
≠0
|
71 - 90 | 0x47-0x5A
|
GHIJKLMNOPQRSTUVWXYZ
|
0
|
≠0
|
0
|
0
|
≠0
|
0
|
≠0
|
≠0
|
≠0
|
0
|
0
|
0
|
91 - 96 | 0x5B-0x60
|
[\]^_`
|
0
|
≠0
|
0
|
0
|
≠0
|
≠0
|
0
|
0
|
0
|
0
|
0
|
0
|
97 -102 | 0x61-0x66
|
abcdef
|
0
|
≠0
|
0
|
0
|
≠0
|
0
|
≠0
|
≠0
|
0
|
≠0
|
0
|
≠0
|
103-122 | 0x67-0x7A
|
ghijklmnopqrstuvwxyz
|
0
|
≠0
|
0
|
0
|
≠0
|
0
|
≠0
|
≠0
|
0
|
≠0
|
0
|
0
|
123-126 | 0x7B-0x7E
|
{|}~
|
0
|
≠0
|
0
|
0
|
≠0
|
≠0
|
0
|
0
|
0
|
0
|
0
|
0
|
127 | 0x7F
|
backspace character (DEL )
|
≠0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|