feof

 

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>
int feof( FILE *stream );

Comprueba si el fin de la secuencia de archivo dado se ha alcanzado .

Original:

Checks if the end of the given file stream has been reached.

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Parámetros

stream

-

la secuencia de archivo para comprobarlo Original: the file stream to check 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

valor distinto de cero si el final de la secuencia se ha alcanzado, de lo contrario ​0​

Original:

nonzero value if the end of the stream has been reached, otherwise ​0​

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Notas

Esta función sólo informa sobre el estado corriente según lo informado por la más reciente operación I / O, no examina el origen de datos asociado. Por ejemplo, si la más reciente de E / S fue un fgetc, que devuelve el último byte de un archivo, feof devuelve no-cero. El próximo fgetc falla y cambia el estado corriente de al final de su archivo. Sólo entonces feof devuelve cero .

Original:

This function only reports the stream state as reported by the most recent I/O operation, it does not examine the associated data source. For example, if the most recent I/O was a fgetc, which returned the last byte of a file, feof returns non-zero. The next fgetc fails and changes the stream state to end-of-file. Only then feof returns zero.

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En el uso típico, el procesamiento de flujo de entrada se detiene en cualquier error; feof ferrror y se utilizan entonces para distinguir entre diferentes circunstancias de error .

Original:

In typical usage, input stream processing stops on any error; feof and ferrror are then used to distinguish between different error conditions.

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Ejemplo

#include <stdio.h>
#include <stdlib.h>
 
int main()
{
    FILE* fp = fopen("test.txt", "r");
    if(!fp) {
        perror("File opening failed");
        return EXIT_FAILURE;
    }
 
    int c; // note: int, not char, required to handle EOF
    while ((c = fgetc(fp)) != EOF) { // typical file reading loop
       putchar(c);
    }
 
    if (ferror(fp))
        puts("I/O error when reading");
    else if (feof(fp))
        puts("End of file reached successfully");
}

Ver también

clearerr	borra los errores Original: clears errors The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (función)
perror	muestra una cadena de caracteres correspondiente del error actual a stderr Original: displays a character string corresponding of the current error to stderr The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (función)
ferror	comprueba si hay un error de archivo Original: checks for a file error 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 feof