std::isxdigit

 

C++

Langage

Concepts

Bibliothèque d'utilitaires

Bibliothèque pour les chaînes de caractères

Bibliothèque de conteneurs

Bibliothèque d'algorithmes

Bibliothèque d'itérateurs

Bibliothèque pour le calcul numérique

Bibliothèque pour les entrées/sorties

Bibliothèque pour la régionalisation

Bibliothèque pour les expressions régulières (C++11)

Bibliothèque pour les opérations atomiques (C++11)

Bibliothèque pour les processus légers (threads) (C++11)

 

Bibliothèque de chaînes de caractères

Chaînes à zéro terminal Original: Null-terminated strings The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

Les chaînes d'octets

Chaines multi-octets

Les chaînes étendues

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

basic_string

char_traits

 

Chaînes d'octets à zéro terminal

Fonctions Original: Functions The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
Manipulation caractère 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
Conversion aux formats numériques Original: Conversions to numeric formats The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
atof atoi atol atoll strtol strtoll	strtoul strtoull strtof strtod strtold
La manipulation de chaînes Original: String manipulation The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
strcpy
strncpy
strcat
strncat
strxfrm
Examen chaîne Original: String examination The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
strlen strcmp strncmp strcoll strchr strrchr	strspn strcspn strpbrk strstr strtok
Manipulation de la mémoire Original: Memory manipulation The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
memchr
memcmp
memset
memcpy
memmove
Divers Original: Miscellaneous The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
strerror

 

Déclaré dans l'en-tête <cctype>
int isxdigit(int ch );

Vérifie si le caractère large est un caractère hexadécimal numérique (0123456789abcdefABCDEF) .

Original:

Checks if the given wide character is a hexadecimal numeric character (0123456789abcdefABCDEF).

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Paramètres

ch

-

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

Retourne la valeur

Valeur non nulle (true) si le caractère est un caractère hexadécimal numérique, 0 (false) autrement .

Original:

Non-zero value (true) if the character is an hexadecimal numeric character, 0 (false) otherwise.

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Notes

isdigit et isxdigit sont les seuls standards étroites fonctions de classification de personnalité ne sont pas affectés par les paramètres régionaux actuellement installé C. bien que certaines implémentations (par exemple Microsoft en 1252 codepage) peut classer supplémentaires caractères mono-octet sous forme de chiffres .

Original:

isdigit and isxdigit are the only standard narrow character classification functions that are not affected by the currently installed C locale. although some implementations (e.g. Microsoft in 1252 codepage) may classify additional single-byte characters as digits.

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Voir aussi

isxdigit(std::locale)	vérifie si un caractère est considéré comme un chiffre hexadécimal par un paramètre régional Original: checks if a character is classified as a hexadecimal digit 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. (fonction générique)
iswxdigit	vérifie si un caractère est un caractère hexadécimal Original: checks if a character is a hexadecimal character The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (fonction)
C documentation for isxdigit

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