std::basic_istream::get

 

C++

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Contenedores biblioteca

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Entrada / salida de la biblioteca

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Operaciones de biblioteca Atómica (C++11)

Tema Biblioteca de ayuda (C++11)

 

Entrada / salida de la biblioteca

I / O manipuladores

C-estilo 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 (obsoleto)

Arroyos Original: Streams The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

Abstracciones 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

Cadena de 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 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 (obsoleto)

ostrstream (obsoleto)

strstream (obsoleto)

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

Error interfaz categoría 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)

 

std::basic_istream

Los objetos globales Original: Global objects The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

cin wcin

Las funciones miembro Original: Member functions The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

basic_istream::basic_istream

basic_istream::~basic_istream

basic_istream::operator= (C++11)

Entrada con formato Original: Formatted input The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

basic_istream::operator>>

Entrada sin formato Original: Unformatted input The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

basic_istream::get

basic_istream::peek

basic_istream::unget

basic_istream::putback

basic_istream::getline

basic_istream::ignore

basic_istream::read

basic_istream::readsome

basic_istream::gcount

Posicionamiento Original: Positioning The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

basic_istream::tellg

basic_istream::seekg

Varios Original: Miscellaneous The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

basic_istream::sync

basic_istream::swap (C++11)

Clases de miembros Original: Member classes The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

basic_istream::sentry

Terceros funciones Original: Non-member functions The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

operator>>(std::basic_istream)

 

int_type get();	(1)
basic_istream& get( char_type& ch );	(2)
basic_istream& get( char_type* s, std::streamsize count );	(3)
basic_istream& get( char_type* s, std::streamsize count, char_type delim );	(4)
basic_istream& get( basic_streambuf& strbuf );	(5)
basic_istream& get( basic_streambuf& strbuf, char_type delim );	(6)

Extrae personaje o personajes de la corriente .

Original:

Extracts character or characters from stream.

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Todas las versiones se comportan como UnformattedInputFunctions. Después de la construcción y comprobación del objeto centinela, estas funciones realizan los siguientes:

Original:

All versions behave as UnformattedInputFunctions. After constructing and checking the sentry object, these functions perform the following:

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1)

lee un carácter y lo devuelve si están disponibles. De lo contrario, devuelve Traits::eof() y conjuntos failbit y eofbit .

Original:

reads one character and returns it if available. Otherwise, returns Traits::eof() and sets failbit and eofbit.

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2)

lee un carácter y lo almacena en ch si están disponibles. De lo contrario, deja ch sin modificar y establece failbit y eofbit. Tenga en cuenta que esta función no está sobrecargado en los tipos signed char y unsigned char, a diferencia del operador >> carácter con formato de entrada .

Original:

reads one character and stores it to ch if available. Otherwise, leaves ch unmodified and sets failbit and eofbit. Note that this function is not overloaded on the types signed char and unsigned char, unlike the formatted character input operator>>.

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3)

mismo como get(s, count, widen('\n')), es decir, lee en la mayoría de los caracteres count-1 y los almacena en una cadena de caracteres apuntada por s hasta '\n' se encuentra .

Original:

same as get(s, count, widen('\n')), that is, reads at most count-1 characters and stores them into character string pointed to by s until '\n' is found.

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4)

lee los caracteres y los almacena en las posiciones sucesivas de la matriz de caracteres cuyo primer elemento es apuntado por s. Los caracteres se extraen y se almacenan hasta que cualquiera de las siguientes situaciones:

Original:

reads characters and stores them into the successive locations of the character array whose first element is pointed to by s. Characters are extracted and stored until any of the following occurs:

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• n-1 caracteres se han guardado

  Original:

  n-1 characters have been stored

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• condición de fin de archivo se produce en la secuencia de entrada (setstate(eofbit) se llama)

  Original:

  end of file condition occurs in the input sequence (setstate(eofbit) is called)

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• el siguiente carácter de entrada disponible c delim es igual, como se determina por Traits::eq(c, delim). Este personaje no se extrae (a diferencia de basic_istream::getline())

  Original:

  the next available input character c equals delim, as determined by Traits::eq(c, delim). This character is not extracted (unlike basic_istream::getline())

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Si hay personajes fueron extraídos, llama setstate(failbit). En cualquier caso, si count>0, un carácter nulo (CharT() se almacena en la siguiente posición sucesiva de la matriz .

Original:

If no characters were extracted, calls setstate(failbit). In any case, if count>0, a null character (CharT() is stored in the next successive location of the array.

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5)

Mismo como get(strbuf, widen('\n')), es decir, lee los caracteres disponibles y los inserta en el objeto basic_streambuf dado hasta '\n' se encuentra ..

Original:

same as get(strbuf, widen('\n')), that is, reads available characters and inserts them to the given basic_streambuf object until '\n' is found.

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6)

lee los caracteres y los inserta a la secuencia de salida controlada por el objeto dado basic_streambuf caracteres se extrae y se inserta en strbuf hasta cualquiera de las siguientes situaciones:.

Original:

reads characters and inserts them to the output sequence controlled by the given basic_streambuf object. Characters are extracted and inserted into strbuf until any of the following occurs:

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• condición de fin de archivo se produce en la secuencia de entrada

  Original:

  end of file condition occurs in the input sequence

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• insertar en el... secuencia de salida falla (en cuyo caso el carácter que no puede insertarse, no se extrae)

  Original:

  insert into the output sequence fails (in which case the character that could not be inserted, is not extracted)

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• el siguiente carácter de entrada disponible c delim es igual, como se determina por Traits::eq(c, delim). Este personaje no se extrae .

  Original:

  the next available input character c equals delim, as determined by Traits::eq(c, delim). This character is not extracted.

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• produce una excepción (en cuyo caso se detecta la excepción y no vuelve a iniciar)

  Original:

  an exception occurs (in which case the exception is caught and not rethrown)

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Si no hay caracteres se extrajeron, llamadas setstate(failbit) .

Original:

If no characters were extracted, calls setstate(failbit).

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Todas las versiones establecer el valor de gcount() al número de caracteres extraídos .

Original:

All versions set the value of gcount() to the number of characters extracted.

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Parámetros

ch	-	referencia al carácter se escribe el resultado a Original: reference to the character to write the result to The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
s	-	puntero a la cadena de caracteres para almacenar los caracteres a Original: pointer to the character string to store the characters to The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
count	-	tamaño de la cadena de caracteres apuntada por s Original: size of character string pointed to by s The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
delim	-	delimitando carácter para detener la extracción a. No es extraída y almacenada no . Original: delimiting character to stop the extraction at. It is not extracted and not stored. The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
strbuf	-	búfer de la secuencia para leer el contenido Original: stream buffer to read the content to 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

1)

el carácter extraído o Traits::eof()

Original:

the extracted character or Traits::eof()

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2-6) *this

Ejemplo

#include <sstream>
#include <iostream>
int main()
{
    std::istringstream s1("Hello, world.");
    char c1 = s1.get(); // reads 'H'
    std::cout << "after reading " << c1 << ", gcount() == " <<  s1.gcount() << '\n';
    char c2;
    s1.get(c2);         // reads 'e'
    char str[5];
    s1.get(str, 5);     // reads "llo,"
    std::cout << "after reading " << str << ", gcount() == " <<  s1.gcount() << '\n';
    std::cout << c1 << c2 << str;
    s1.get(*std::cout.rdbuf()); // reads the rest, not including '\n'
    std::cout << "\nAfter the last get(), gcount() == " << s1.gcount() << '\n';
}

Output:

after reading H, gcount() == 1
after reading llo,, gcount() == 4
Hello, world.
After the last get(), gcount() == 7

Ver también

read	extrae los bloques de caracteres Original: extracts blocks of characters The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (miembro público función)
operator>>	extractos de formato de datos Original: extracts formatted data The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (miembro público función)
operator>>(std::basic_istream)	extrae caracteres y arrays de caracteres Original: extracts characters and character arrays The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (función de plantilla)