std::islower

 

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Funções Original: Functions The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
Manipulação personagem Original: Character manipulation The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
isalnum isalpha islower isupper isdigit isxdigit isblank (C++11)	iscntrl isgraph isspace isprint ispunct tolower toupper
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Definido no cabeçalho <cctype>
int islower(int ch );

Verifica se o caráter dado é classificado como um caractere minúsculo de acordo com a localidade C atual. No padrão local "C", islower retorna verdadeiro apenas para as 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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Se islower retornos true, é garantido que iscntrl, isdigit, ispunct, e isspace retorno false para o mesmo personagem na localidade C mesmo.

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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Parâmetros

ch

-

personagem Original: character The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

Valor de retorno

Valor diferente de zero (true) se o personagem é uma letra minúscula, 0 (false) de outra forma.

Original:

Non-zero value (true) if the character is a lowercase letter, 0 (false) otherwise.

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Exemplo

#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';   }

Saída:

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

Veja também

islower(std::locale)	checa se o caractere é classificado como minúsculo pela localização Original: checks if a character is classified as lowercase 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. (modelo de função)
iswlower	verifica se um caractere largo é minúscula Original: checks if a wide character is lowercase The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (função)
Documentação C para islower

ASCII values (hex)		characters	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.)	≠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