std::strerror

 

C++

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Biblioteca de expresiones regulares (C++11)

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Strings biblioteca

Terminadas en nulo 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.

Cadenas de bytes

Multibyte cuerdas

Cadenas anchas

Clases 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

 

Terminadas en nulo de bytes

Funciones Original: Functions The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
De manipulación de caracteres 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
Las conversiones a formatos numéricos 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
Cadena de manipulación 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
Cadena examen 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
Memoria manipulación 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
Varios 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

 

Defined in header <cstring>
char* strerror( int errnum );

versión Devuelve el texto del código de error errnum. errnum suele adquirirse a partir de la variable errno, sin embargo, la función acepta cualquier valor de tipo int. El mensaje es específico del entorno local .

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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La cadena de bytes devuelto no debe ser modificado por el programa, pero pueden ser sobrescritos por una llamada posterior a la función strerror .

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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Parámetros

errnum

-

valor integral se refiere a un error código Original: integral value referring to a error code 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

Puntero a una cadena terminada en cero byte correspondiente al código de error errnum .

Original:

Pointer to a null-terminated byte string corresponding to the error code errnum.

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Ejemplo

#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

Ver también

E2BIG, EACCES, ..., EXDEV	macros para las condiciones de error estándar POSIX compatibles Original: macros for standard POSIX-compatible error conditions The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (macro constante)
C documentation for strerror