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std::fseek

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Buffers
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basic_streambuf
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Streams
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Abstrações
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C estilo de I / O
Funções
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Arquivo de acesso
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fread
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Não formatado entrada / saída
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Arquivo de posicionamento
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File positioning
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ftell
fgetpos
fseek
fsetpos
rewind
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Defined in header <cstdio>
int fseek( std::FILE* stream, long offset, int origin );
Define o indicador de posição de arquivo do fluxo stream arquivo da seguinte maneira:
Original:
Sets the file position indicator for the file stream stream as follows:
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Se o stream está aberto no modo binário, a nova posição é exactamente medidos offset bytes a partir do início do processo é origin SEEK_SET é, a partir da posição actual ficheiro se origin é SEEK_CUR e, a partir do final do ficheiro, se é origin SEEK_END. Alguns fluxos binários podem não suportar a SEEK_END.
Original:
If the stream is open in binary mode, the new position is exactly offset bytes measured from the beginning of the file is origin is SEEK_SET, from the current file position if origin is SEEK_CUR, and from the end of the file if origin is SEEK_END. Some binary streams may not support the SEEK_END.
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Se o stream está aberto em modo texto, os valores só são suportados para offset zero (que funciona com qualquer origin) e um valor retornado por uma chamada anterior para std::ftell em um fluxo associado com o mesmo arquivo (que só funciona com origin de SEEK_SET.
Original:
If the stream is open in text mode, the only supported values for offset are zero (which works with any origin) and a value returned by an earlier call to std::ftell on a stream associated with the same file (which only works with origin of SEEK_SET.
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Além de mudar o indicador de posição do arquivo, fseek desfaz os efeitos da std::ungetc e limpa o fim do estatuto de arquivo, se for o caso.
Original:
In addition to changing the file position indicator, fseek undoes the effects of std::ungetc and clears the end-of-file status, if applicable.
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Se uma leitura ou escrita de erro ocorre, o indicador de erro para o fluxo ( std::ferror) é definida a posição do arquivo e não é afetado.
Original:
If a read or write error occurs, the error indicator for the stream (std::ferror) is set and the file position is unaffected.
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Índice

[editar] Parâmetros

stream -
arquivo de fluxo de modificar
Original:
file stream to modify
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offset -
número de caracteres a deslocar a posição relativa à origem
Original:
number of characters to shift the position relative to origin
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origin -
posição para a qual offset é adicionado. Ele pode ter um dos seguintes valores: SEEK_SET, SEEK_CUR, SEEK_END
Original:
position to which offset is added. It can have one of the following values: SEEK_SET, SEEK_CUR, SEEK_END
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[editar] Valor de retorno

0 no sucesso valor diferente de zero, caso contrário.
Original:
0 upon success, nonzero value otherwise.
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[editar] Exemplo

[editar] Veja também

move o indicador de posição de arquivo para um local específico em um arquivo
Original:
moves the file position indicator to a specific location in a file
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(função) [edit]
fica o indicador de posição de arquivo
Original:
gets the file position indicator
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(função) [edit]
retorna o indicador de posição de arquivo atual
Original:
returns the current file position indicator
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(função) [edit]
move o indicador de posição do arquivo para o início em um arquivo
Original:
moves the file position indicator to the beginning in a file
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(função) [edit]
C documentation for fseek