perror

 

C

Idioma

Escriba apoyo

Gestión de memoria dinámica

Gestión de errores

Programa de servicios públicos

Fecha y hora de los servicios públicos

Strings biblioteca

Algoritmos

Numéricos

Entrada / salida de apoyo

Localización de apoyo

Tema de ayuda (C11)

Operaciones atómicas (C11)

 

File input/output

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.
Acceso a archivos Original: File access The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
fopen freopen fclose fflush	fwide setbuf setvbuf
Directo de entrada / salida Original: Direct input/output The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
fread
fwrite
Entrada sin formato / salida Original: Unformatted input/output The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
fgetc fgets fputc fputs getchar gets putchar puts ungetc	fgetwc fgetws fputwc fputws getwchar putwchar ungetwc
Formato de entrada / salida Original: Formatted input/output The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
scanf fscanf sscanf vscanf vfscanf vsscanf (C99) (C99) (C99) printf fprintf sprintf snprintf (C99) vprintf vfprintf vsprintf vsnprintf (C99)	wscanf fwscanf swscanf vwscanf vfwscanf vswscanf (C99) (C99) (C99) wprintf fwprintf swprintf vwprintf vfwprintf vswprintf
Presentar posicionamiento Original: File positioning The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
ftell
fgetpos
fseek
fsetpos
rewind
Gestión de errores Original: Error handling The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
clearerr
feof
ferror
perror
Las operaciones en los archivos Original: Operations on files The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
remove
rename
tmpfile
tmpnam

 

Defined in header <stdio.h>
void perror( const char *s );

Láminas a stderr el contenido de la cadena de caracteres terminada en nulo apuntado por s (a menos que s es un puntero nulo), seguido de los dos caracteres ": ", seguido de la aplicación definida mensaje de error que describe el código de error almacenado actualmente en la variable de sistema errno (idéntica a la salida de strerror(errno)), seguido por '\n' .

Original:

Prints to stderr the contents of the null-terminated character string pointed to by s (unless s is a null pointer), followed by the two characters ": ", followed by the implementation-defined error message describing the error code currently stored in the system variable errno (identical to the output of strerror(errno)), followed by '\n'.

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

Parámetros

s

-

puntero a una cadena terminada en nulo con mensaje explicativo Original: pointer to a null-terminated string with explanatory message 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

(Ninguno)

Original:

(none)

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

Ejemplo

#include <fcntl.h>
#include <stdio.h>
 
int main()
{
    if (open("non_existent", O_RDONLY) == -1) {
        perror("open()");
    }
}

Output:

open(): No such file or directory

Ver también

strerror	devuelve una versión de texto de un código de error Original: returns a text version of a given error code The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (función)
C++ documentation for perror