std::isprint

 

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 isprint(int ch );

Vérifie si le caractère donné peut être imprimé, i. e. il est soit un nombre (0123456789), une lettre majuscule (ABCDEFGHIJKLMNOPQRSTUVWXYZ), une lettre minuscule (abcdefghijklmnopqrstuvwxyz), un signe de ponctuation (!"#$%&'()*+,-./:;<=>?@[\]^_`{|}~), ou dans l'espace, ou n'importe quel caractère imprimable classé par le locale courant C .

Original:

Checks if the given character can be printed, i. e. it is either a number (0123456789), an uppercase letter (ABCDEFGHIJKLMNOPQRSTUVWXYZ), a lowercase letter (abcdefghijklmnopqrstuvwxyz), a punctuation character(!"#$%&'()*+,-./:;<=>?@[\]^_`{|}~), or space, or any character classified as printable by the current C locale.

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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 peut être imprimé, 0 (false) autrement .

Original:

Non-zero value (true) if the character can be printed, 0 (false) otherwise.

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Exemple

#include <iostream>#include <cctype>#include <clocale>   int main(){char c ='\xa0';// the non-breaking space in ISO-8859-1   std::cout<<"isprint(\'\\xa0\', default C locale) returned "<<std::boolalpha<<(bool)std::isprint(c)<<'\n';   std::setlocale(LC_ALL, "en_GB.iso88591");std::cout<<"isprint(\'\\xa0\', ISO-8859-1 locale) returned "<<std::boolalpha<<(bool)std::isprint(c)<<'\n';}

Résultat :

isprint('\xa0', default C locale) returned false isprint('\xa0', ISO-8859-1 locale) returned true

Voir aussi

isprint(std::locale)	vérifie si un caractère est classé comme imprimables par un paramètre régional Original: checks if a character is classified as printable 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)
iswprint	vérifie si un caractère large est un personnage de l'impression Original: checks if a wide character is a printing 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 isprint

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