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std::isprint

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< cpp‎ | string‎ | byte

 
 
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Null-terminated strings
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Functions
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Character manipulation
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Umwandlungen in numerische Formate
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Conversions to numeric formats
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String manipulation
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String examination
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Memory manipulation
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Miscellaneous
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Defined in header <cctype>
int isprint( int ch );
Prüft, ob der angegebene Zeichen können gedruckt werden, i. E. es ist entweder eine Zahl (0123456789), ein Großbuchstabe (ABCDEFGHIJKLMNOPQRSTUVWXYZ), ein Kleinbuchstabe (abcdefghijklmnopqrstuvwxyz), ein Satzzeichen (!"#$%&'()*+,-./:;<=>?@[\]^_`{|}~) oder Raum, oder ein beliebiges Zeichen als druckfähige von der aktuellen C locale eingestuft .
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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Inhaltsverzeichnis

[Bearbeiten] Parameter

ch -
Charakter
Original:
character
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[Bearbeiten] Rückgabewert

Nicht-Null-Wert (true), wenn das Zeichen gedruckt werden können, 0 (false) ansonsten .
Original:
Non-zero value (true) if the character can be printed, 0 (false) otherwise.
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[Bearbeiten] Beispiel

#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';
}

Output:

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

[Bearbeiten] Siehe auch

prüft, ob ein Zeichen als druckbare durch eine locale eingestuft
Original:
checks if a character is classified as printable by a locale
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(Funktions-Template) [edit]
prüft, ob eine breite Zeichen ein druckbares Zeichen
Original:
checks if a wide character is a printing character
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(Funktion) [edit]
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