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std::islower

De cppreference.com
< cpp‎ | string‎ | byte
 
 
 
 
Definido en el archivo de encabezado <cctype>
int islower(int ch );
Comprueba si el carácter dado se clasifica como una minúscula de acuerdo con la actual configuración regional C. En el valor predeterminado "C", islower devuelve true sólo para las letras minúsculas (abcdefghijklmnopqrstuvwxyz) .
Original:
Checks if the given character is classified as a lowercase character according to the current C locale. In the default "C" locale, islower returns true only for the lowercase letters (abcdefghijklmnopqrstuvwxyz).
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Si vuelve islowertrue, se garantiza que iscntrl, isdigit, ispunct y isspace retorno false para el mismo personaje en la misma localidad C .
Original:
If islower returns true, it is guaranteed that iscntrl, isdigit, ispunct, and isspace return false for the same character in the same C locale.
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Contenido

[editar]Parámetros

ch -
carácter
Original:
character
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[editar]Valor de retorno

Valor distinto de cero (true) si el carácter es una letra minúscula, 0 (false) de otra manera .
Original:
Non-zero value (true) if the character is a lowercase letter, 0 (false) otherwise.
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[editar]Ejemplo

#include <iostream>#include <cctype>#include <clocale>   int main(){char c ='\xe5';// letter å in ISO-8859-1   std::cout<<"islower(\'\\xe5\', default C locale) returned "<<std::boolalpha<<(bool)std::islower(c)<<'\n';   std::setlocale(LC_ALL, "en_GB.iso88591");std::cout<<"islower(\'\\xe5\', ISO-8859-1 locale) returned "<<std::boolalpha<<(bool)std::islower(c)<<'\n';   }

Salida:

islower('\xe5', default C locale) returned false islower('\xe5', ISO-8859-1 locale) returned true

[editar]Ver también

Comprueba si un carácter está clasificado como una letra minúscula por una configuración regional.
(plantilla de función)[editar]
Comprueba si un carácter ancho es minúscula
Original:
checks if a wide character is lowercase
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(función)[editar]
Documentación de C para islower
Valores ASCII
(hex)
Caracteres

iscntrl
iswcntrl

isprint
iswprint

isspace
iswspace

isblank
iswblank

isgraph
iswgraph

ispunct
iswpunct

isalnum
iswalnum

isalpha
iswalpha

isupper
iswupper

islower
iswlower

isdigit
iswdigit

isxdigit
iswxdigit

0 - 8 0x00-0x08 control codes (NUL, etc.) ≠000000000000
9 0x09 tab (\t) ≠00≠0≠000000000
10 - 13 0x0A-0x0D whitespaces (\n,\v,\f,\r) ≠00≠0000000000
14 - 31 0x0E-0x1F control codes ≠000000000000
32 0x20 space 0≠0≠0≠000000000
33 - 47 0x21-0x2F!"#$%&'()*+,-./0≠000≠0≠0000000
48 - 57 0x30-0x3901234567890≠000≠00≠0000≠0≠0
58 - 64 0x3a-0x40:;<=>?@0≠000≠0≠0000000
65 - 70 0x41-0x46ABCDEF0≠000≠00≠0≠0≠000≠0
71 - 90 0x47-0x5AGHIJKLMNOPQRSTUVWXYZ0≠000≠00≠0≠0≠0000
91 - 96 0x5B-0x60[\]^_`0≠000≠0≠0000000
97 -102 0x61-0x66abcdef0≠000≠00≠0≠00≠00≠0
103-122 0x67-0x7Aghijklmnopqrstuvwxyz0≠000≠00≠0≠00≠000
123-126 0x7B-0x7E{|}~0≠000≠0≠0000000
127 0x7F backspace character (DEL) ≠000000000000
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