Espaços nominais
Variantes
Acções

std::feof

Da cppreference.com
< cpp‎ | io‎ | c

 
 
De entrada / saída da biblioteca
I / O manipuladores
C estilo de I / O
Buffers
Original:
Buffers
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
basic_streambuf
basic_filebuf
basic_stringbuf
strstreambuf(obsoleta)
Streams
Original:
Streams
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
Abstrações
Original:
Abstractions
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
ios_base
basic_ios
basic_istream
basic_ostream
basic_iostream
File I / O
Original:
File I/O
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
basic_ifstream
basic_ofstream
basic_fstream
Cordas I / O
Original:
String I/O
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
basic_istringstream
basic_ostringstream
basic_stringstream
Matriz de I / O
Original:
Array I/O
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
istrstream(obsoleta)
ostrstream(obsoleta)
strstream(obsoleta)
Tipos
Original:
Types
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
streamoff
streamsize
fpos
Interface de categoria de erro
Original:
Error category interface
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
iostream_category(C++11)
io_errc(C++11)
 
C estilo de I / O
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.
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.
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.
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 <cstdio>
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.
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

Índice

[editar] 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.

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

[editar] 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 std::fgetc, que retornou o último byte de um arquivo, std::feof retorna não-zero. O std::fgetc próxima falha e muda o estado de fluxo para' fim-de-arquivo. Só então std::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 std::fgetc, which returned the last byte of a file, std::feof returns non-zero. The next std::fgetc fails and changes the stream state to end-of-file. Only then std::feof returns zero.
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
Em utilização normal, o processamento pára no fluxo de entrada de qualquer erro, e feof std::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 std::ferrror are then used to distinguish between different error conditions.
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

[editar] Exemplo

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


[editar] Veja também

verifica se fim-de-arquivo foi atingido
Original:
checks if end-of-file has been reached
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

(of std::basic_ios função pública membro) [edit]
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) [edit]
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) [edit]
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) [edit]