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< cpp‎ | string‎ | byte
K (r2.7.3) (Bot: Ergänze: en, es, it, pt, ru)
K (Use {{lc}}. Update links. Various fixes.)
 
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===Parameter===
 
===Parameter===
−
{{param list begin}}
+
{{begin}}
−
{{param list item | errnum |{{tr| Integralwert Bezugnahme auf eine Fehler Code| integral value referring to a error code}}}}
+
{{| errnum |{{tr| Integralwert Bezugnahme auf eine Fehler Code| integral value referring to a error code}}}}
−
{{param list end}}
+
{{end}}
  
 
===Rückgabewert===
 
===Rückgabewert===
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===Siehe auch===
 
===Siehe auch===
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{{dcl list begin}}
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{{begin}}
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{{dcl list template | cpp/error/dcl list errno_macros}}
+
{{| cpp/error/errno_macros}}
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{{dcl list see c | c/string/byte/strerror}}
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{{see c | c/string/byte/strerror}}
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{{dcl list end}}
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{{end}}
  
 
[[en:cpp/string/byte/strerror]]
 
[[en:cpp/string/byte/strerror]]

Aktuelle Version vom 1. Juli 2013, 20:49 Uhr

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C++
 
Strings Bibliothek
Null-terminierte Strings
Original:
Null-terminated strings
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Byte-Strings
Multibyte-Strings
Wide Strings
Classes
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Classes
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basic_string
char_traits
 
Null-terminierte Byte-Strings
Funktionen
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Functions
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Character Manipulation
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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 manipulation
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strcpy
strncpy
strcat
strncat
strxfrm
String Prüfung
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String examination
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Speicher Manipulation
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Memory manipulation
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memchr
memcmp
memset
memcpy
memmove
Verschiedenes
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Miscellaneous
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strerror
 
definiert in Header <cstring>
char* strerror( int errnum );
Versandkosten Textversion der Fehlercode errnum. errnum ist in der Regel von der errno variable erworben, aber die Funktion akzeptiert einen Wert vom Typ int. Die Botschaft ist locale-spezifischen .
Original:
Returns text version of the error code errnum. errnum is usually acquired from the errno variable, however the function accepts any value of type int. The message is locale-specific.
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Das zurückgegebene Byte-String darf nicht verändert werden durch das Programm, kann aber überschrieben werden durch einen nachfolgenden Aufruf der strerror Funktion .
Original:
The returned byte string must not be modified by the program, but may be overwritten by a subsequent call to the strerror function.
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Inhaltsverzeichnis

[Bearbeiten] Parameter

errnum -
Integralwert Bezugnahme auf eine Fehler Code
Original:
integral value referring to a error code
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[Bearbeiten] Rückgabewert

Zeiger auf einen null-terminierte Byte-String entsprechend dem Fehlercode errnum .
Original:
Pointer to a null-terminated byte string corresponding to the error code errnum.
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[Bearbeiten] Beispiel

[edit]
#include <iostream>
#include <cmath>
#include <cerrno>
#include <cstring>
 
int main()
{
    double not_a_number = std::log(-1.0);
    if (errno == EDOM) {
        std::cout << "log(-1) failed: " << std::strerror(errno) << '\n';
    }
}

Output: 

log(-1) failed: Numerical argument out of domain

[Bearbeiten] Siehe auch
Makros für Standard-POSIX-kompatiblen Fehlerbedingungen
Original:
macros for standard POSIX-compatible error conditions
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(Makro konstant) [edit]
C documentation for strerror
Von „https://de.cppreference.com/mwiki/index.php?title=cpp/string/byte/strerror&oldid=27888“