feof

 

C

Linguagem

Digite apoio

Gerenciamento de memória dinâmica

De tratamento de erros

Utilidades do programa

Utilitários de data e hora

Biblioteca cordas

Algoritmos

Numéricos

Entrada / saída de apoio

Suporte de localização

Apoio discussão (C11)

Operações atômicas (C11)

 

File input/output

Funções Original: Functions The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
Arquivo de acesso 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
Directa de entrada / saída 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
Não formatado entrada / saída 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
Formatado de entrada / saída 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
Arquivo de posicionamento 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
De tratamento de erros 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
Operações em arquivos 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 );

Verifica se o fim do fluxo determinado arquivo foi atingido.

Original:

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

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Parâmetros

stream

-

o fluxo de arquivo para verificar 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 diferente de zero se o fim do fluxo foi atingido, de outro modo ​0​

Original:

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

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Notas

Esta função só informa o estado de fluxo, conforme relatado pelo mais recente operação I / O, que não examina a fonte de dados associado. Por exemplo, se o que eu mais recentes / O foi um fgetc, que retornou o último byte de um arquivo, feof retorna não-zero. O fgetc próxima falha e muda o estado de fluxo para' fim-de-arquivo. Só então feof retorna zero.

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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Em utilização normal, o processamento pára no fluxo de entrada de qualquer erro, e feof ferrror são então utilizados para distinguir entre as condições de erro diferentes.

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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Exemplo

#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");
}

Veja também

clearerr	elimina erros 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. (função)
perror	exibe uma seqüência de caracteres correspondente do erro atual para 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. (função)
ferror	verifica um erro de arquivo 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. (função)
C++ documentation for feof