C-style file input/output

 

C++

Suporte ao Compilador

Freestanding and hosted

Linguagem

Headers da Biblioteca Standard

Requerimentos nomeados

Feature test macros (C++20)

Biblioteca de suporte de língua

Biblioteca de conceitos(C++20)

Biblioteca de diagnósticos

Biblioteca de utilitários em geral

Biblioteca de strings

Biblioteca de containers

Ranges library(C++20)

Biblioteca de iteradores

Biblioteca de algorítmos

Biblioteca numérica

Biblioteca de localizações

Biblioteca de input/output

Biblioteca de sistema de arquivo(C++17)

Biblioteca de expressões regulares(C++11)

Biblioteca de operações atômicas(C++11)

Biblioteca de suporte de thread(C++11)

Especificações Técnicas

Índice de symbolos

Bibliotecas externas

 

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.
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.
scanffscanfsscanf vscanfvfscanfvsscanf (C++11)(C++11)(C++11) printffprintfsprintfsnprintf (C++11) vprintfvfprintfvsprintfvsnprintf (C++11)	wscanffwscanfswscanf vwscanfvfwscanfvswscanf (C++11)(C++11)(C++11) wprintffwprintfswprintf vwprintfvfwprintfvswprintf
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

 

O subconjunto CI / O do C + + biblioteca padrão implementa C-estilo fluxo de entrada / saída operações. O cabeçalho <cstdio> fornece suporte à operação genérica arquivo e funções de suprimentos com estreitas e multibyte caracteres de entrada / saída de recursos, eo cabeçalho <cwchar> fornece funções com a entrada de caracteres de largura / capacidades de saída.

Original:

The C I/O subset of the C++ standard library implements C-style stream input/output operations. The <cstdio> header provides generic file operation support and supplies functions with narrow and multibyte character input/output capabilities, and the <cwchar> header provides functions with wide character input/output capabilities.

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Fluxos C são objetos de std::FILE tipo que só podem ser acessados ​​e manipulados através de ponteiros da Nota tipo std::FILE* (: embora possa ser possível criar um objeto local de std::FILE tipo por dereferencing e copiar um FILE* válido, usando o endereço de tal cópia em as funções de I / O é um comportamento indefinido). Cada fluxo C está associada a um dispositivo externo físico (arquivo, fluxo de entrada padrão, impressora, porta serial, etc).

Original:

C streams are objects of type std::FILE that can only be accessed and manipulated through pointers of type std::FILE* (Note: while it may be possible to create a local object of type std::FILE by dereferencing and copying a valid FILE*, using the address of such copy in the I/O functions is undefined behavior). Each C stream is associated with an external physical device (file, standard input stream, printer, serial port, etc).

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Fluxos C pode ser usado tanto para entrada como não formatado e formatado e saída. Eles são sensíveis à localidade e pode realizar amplas / multibyte conversões necessárias. Ao contrário de C + + riachos, onde cada fluxo está associado com a sua própria localidade, todos os fluxos de C acessar o objeto mesmo local: o mais recentemente instalado com std::setlocale.

Original:

C streams can be used for both unformatted and formatted input and output. They are locale-sensitive and may perform wide/multibyte conversions as necessary. Unlike C++ streams, where each stream is associated with its own locale, all C streams access the same locale object: the one most recently installed with std::setlocale.

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Além do sistema de informações específicas necessárias para acessar o dispositivo (por exemplo, um descritor de arquivo POSIX), cada objeto de fluxo de C tem o seguinte:

Original:

Besides the system-specific information necessary to access the device (e.g. a POSIX file descriptor), each C stream object holds the following:

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1)

Largura de caractere: estreita ou larga

Original:

Character width: narrow or wide

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2)

Buffer estado: unbuffered, linha-tampão, com buffer.

Original:

Buffering state: unbuffered, line-buffered, fully buffered.

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3)

O tampão, o qual pode ser substituído por uma fonte externa, tampão fornecido pelo utilizador.

Original:

The buffer, which may be replaced by an external, user-provided buffer.

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4)

I / O modo: de entrada, de saída, ou de atualização (entrada e saída).

Original:

I/O mode: input, output, or update (both input and output).

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5)

Binário / indicador do modo texto.

Original:

Binary/text mode indicator.

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6)

Fim-de-arquivo indicador de status.

Original:

End-of-file status indicator.

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7)

Indicador de status de erro.

Original:

Error status indicator.

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8)

Indicador de posição do arquivo (um objeto do tipo std::fpos_t), que, para fluxos de caracteres de largura, inclui o estado parse (um objeto do tipo mbstate_t).

Original:

File position indicator (an object of type std::fpos_t), which, for wide character streams, includes the parse state (an object of type mbstate_t).

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Funções

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	abre um arquivo Original: opens a file The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (função)
freopen	abrir um córrego existente com um nome diferente Original: open an existing stream with a different name The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (função)
fclose	fecha um arquivo Original: closes a file The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (função)
fflush	sincroniza um fluxo de saída com o arquivo real Original: synchronizes an output stream with the actual file The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (função)
fwide	muda um fluxo de arquivos entre o personagem de largura I / O e caráter estreito I / O Original: switches a file stream between wide character I/O and narrow character I/O The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (função)
setbuf	define o buffer para um fluxo de arquivo Original: sets the buffer for a file stream The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (função)
setvbuf	define o tampão e do seu tamanho para um fluxo de arquivo Original: sets the buffer and its size for a file stream The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (função)
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	lê um arquivo Original: reads from a file The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (função)
fwrite	grava em um arquivo Original: writes to a file The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (função)
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.
Caráter estreito Original: Narrow character The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
fgetc getc	recebe um personagem de um fluxo de arquivo Original: gets a character from a file stream The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (função)
fgets	recebe uma cadeia de caracteres a partir de um fluxo de arquivo Original: gets a character string from a file stream The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (função)
fputc putc	escreve um personagem para um fluxo de arquivo Original: writes a character to a file stream The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (função)
fputs	escreve uma seqüência de caracteres para um fluxo de arquivo Original: writes a character string to a file stream The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (função)
getchar	lê um caracter do stdin Original: reads a character from stdin The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (função)
gets	lê uma cadeia de caracteres de stdin Original: reads a character string from stdin The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (função)
putchar	escreve um personagem para stdout Original: writes a character to stdout The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (função)
puts	escreve uma cadeia de caracteres para stdout Original: writes a character string to stdout The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (função)
ungetc	coloca um personagem de volta em um fluxo de arquivo Original: puts a character back into a file stream The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (função)
Caráter de largura Original: Wide character The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
fgetwc getwc	recebe um caractere largo de um fluxo de arquivo Original: gets a wide character from a file stream The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (função)
fgetws	recebe uma seqüência de largura a partir de um fluxo de arquivo Original: gets a wide string from a file stream The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (função)
fputwc putwc	escreve um caráter amplo para um fluxo de arquivo Original: writes a wide character to a file stream The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (função)
fputws	escreve uma string de gama a um fluxo de arquivo Original: writes a wide string to a file stream The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (função)
getwchar	lê um caractere largo de stdin Original: reads a wide character from stdin The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (função)
putwchar	escreve um caráter amplo para stdout Original: writes a wide character to stdout The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (função)
ungetwc	coloca um caractere largo de volta em um fluxo de arquivo Original: puts a wide character back into a file stream The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (função)
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.
Estreito / multibyte personagem Original: Narrow/multibyte character 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	lê entrada formatada de stdin, um fluxo de arquivo ou um tampão Original: reads formatted input from stdin, a file stream or a buffer The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (função)
vscanf vfscanf vsscanf (C++11) (C++11) (C++11)	lê entrada formatada de stdin, um fluxo de arquivo ou um buffer usando lista de argumentos variável Original: reads formatted input from stdin, a file stream or a buffer using variable argument list The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (função)
printf fprintf sprintf snprintf (C++11)	impressões saída formatada para stdout, um fluxo de arquivo ou um tampão Original: prints formatted output to stdout, a file stream or a buffer The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (função)
vprintf vfprintf vsprintf vsnprintf (C++11)	impressões saída formatada para stdout, um fluxo de arquivo ou um buffer usando lista de argumentos variável Original: prints formatted output to stdout, a file stream or a buffer using variable argument list The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (função)
Caráter de largura Original: Wide character The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
wscanf fwscanf swscanf	lê a entrada de caracteres formatada variedade de stdin, um fluxo de arquivo ou um tampão Original: reads formatted wide character input from stdin, a file stream or a buffer The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (função)
vwscanf vfwscanf vswscanf (C++11) (C++11) (C++11)	lê a entrada de caracteres formatada variedade de stdin, um stream arquivo ou um buffer usando lista de argumentos variável Original: reads formatted wide character input from stdin, a file stream or a buffer using variable argument list The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (função)
wprintf fwprintf swprintf	impressões formatado saída de caracteres de largura para stdout, um fluxo de arquivo ou um tampão Original: prints formatted wide character output to stdout, a file stream or a buffer The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (função)
vwprintf vfwprintf vswprintf	impressões formatado saída de caracteres de largura para stdout, um stream arquivo ou um buffer usando lista de argumentos variável Original: prints formatted wide character output to stdout, a file stream or a buffer using variable argument list The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (função)
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	retorna o indicador de posição de arquivo atual Original: returns the current file position indicator The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (função)
fgetpos	fica o indicador de posição de arquivo Original: gets the file position indicator The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (função)
fseek	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 The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (função)
fsetpos	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 The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (função)
rewind	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 The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (função)
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	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)
feof	cheques para o fim-de-arquivo Original: checks for the end-of-file 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)
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)
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	apaga um arquivo Original: erases a file The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (função)
rename	Renomeia um arquivo Original: renames a file The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (função)
tmpfile	cria e abre um temporário, arquivo auto de remoção Original: creates and opens a temporary, auto-removing file The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (função)
tmpnam	retorna um nome único Original: returns a unique filename The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (função)

Tipos

Defined in header <cstdio>
Tipo Original: Type The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.	Definition
FILE	tipo, capaz de reter todos os dados necessários para controlar um fluxo de CI / O Original: type, capable of holding all information needed to control a C I/O stream The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
fpos_t	tipo, capaz de especificar de forma exclusiva uma posição em um arquivo Original: type, capable of uniquely specifying a position in a file The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

Macros

Defined in header <cstdio>
stdin stdout stderr	expressão do tipo FILE* associado à entrada de stream expression FILE* tipo associado com a saída de stream expression FILE* tipo associado com o fluxo de saída de erro Original: expression of type FILE* associated with the input stream expression of type FILE* associated with the output stream expression of type FILE* associated with the error output stream The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (macro constante)
EOF	expressão constante inteira de int tipo e valor negativo Original: integer constant expression of type int and negative value The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (macro constante)
FOPEN_MAX	número de arquivos que podem ser abertas simultaneamente Original: number of files that can be open simultaneously The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (macro constante)
FILENAME_MAX	tamanho necessário para uma matriz de char para segurar o maior nome de arquivo suportado Original: size needed for an array of char to hold the longest supported file name The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (macro constante)
BUFSIZ	tamanho da memória tampão usada pelo std::setbuf Original: size of the buffer used by std::setbuf The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (macro constante)
_IOFBF _IOLBF _IONBF	argumento para std::setbuf indicando fully buffered I / O argument a linha std::setbuf indicando tamponado eu O argument / para std::setbuf indicando que eu unbuffered / O Original: argument to std::setbuf indicating fully buffered I/O argument to std::setbuf indicating line buffered I/O argument to std::setbuf indicating unbuffered I/O The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (macro constante)
SEEK_SET SEEK_CUR SEEK_END	argumento para std::fseek indicando buscando de início do file argument para std::fseek indicando busca do position argument arquivo atual para std::fseek indicando buscando a partir do final do arquivo Original: argument to std::fseek indicating seeking from beginning of the file argument to std::fseek indicating seeking from the current file position argument to std::fseek indicating seeking from end of the file The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (macro constante)
TMP_MAX	número máximo de nomes de ficheiros originais que podem ser gerados por std::tmpnam Original: maximum number of unique filenames that can be generated by std::tmpnam The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (macro constante)
L_tmpnam	tamanho necessário para uma matriz de char para segurar o resultado de std::tmpnam Original: size needed for an array of char to hold the result of std::tmpnam The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (macro constante)