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std::basic_ostream::put

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< cpp‎ | io‎ | basic ostream

 
 
Entrada / salida de la biblioteca
I / O manipuladores
C-estilo I / O
Buffers
Original:
Buffers
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(obsoleto)
Arroyos
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Streams
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Abstracciones
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Abstractions
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File I / O
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File I/O
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Cadena de I / O
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String I/O
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Matriz I / O
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Array I/O
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(obsoleto)
(obsoleto)
(obsoleto)
Tipos
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Types
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Error interfaz categoría
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Error category interface
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(C++11)
 
std::basic_ostream
Los objetos globales
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Global objects
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Las funciones miembro
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Member functions
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Entrada con formato
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Formatted input
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Entrada sin formato
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Unformatted input
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basic_ostream::put
Posicionamiento
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Positioning
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Varios
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Miscellaneous
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Clases de miembros
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Member classes
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Terceros funciones
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Non-member functions
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basic_ostream& put( char_type ch );
Escribe ch caracteres en la secuencia de salida .
Original:
Writes character ch to the output stream.
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Esta función es una función de salida sin formato: se inicia la ejecución mediante la construcción de un objeto de tipo sentry, que vacía los buffers de salida tie()'d si es necesario y comprueba los errores de secuencia. Después de la construcción, si se devuelve el objeto centinela false, la función devuelve sin pretender ninguna salida. Si se produce una excepción durante la salida, entonces ios :: badbit se establece (se suprime la excepción a menos que exceptions()&badbit) != 0, en cuyo caso se vuelve a iniciar)
Original:
This function is an unformatted output function: it begin execution by constructing an object of type sentry, which flushes the tie()'d output buffers if necessary and checks the stream errors. After construction, if the sentry object returns false, the function returns without attempting any output. If an exception is thrown during output, then ios::badbit is set (the exception is suppressed unless exceptions()&badbit) != 0, in which case it is rethrown)
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Contenido

[editar] Parámetros

ch -
carácter a escribir
Original:
character to write
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[editar] Valor de retorno

*this

[editar] Notas

formato
Original:
This function is not overloaded for the types signed char or unsigned char, unlike the formatted
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A diferencia de las funciones de salida con formato, esta función no establece el failbit si la salida no .
Original:
Unlike formatted output functions, this function does not set the failbit if the output fails.
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[editar] Ejemplo

#include <fstream>
#include <iostream>
int main()
{
    std::cout.put('a'); // normal usage
    std::cout.put('\n');
 
    std::ofstream s("/does/not/exist/");
    s.clear(); // pretend the stream is good
    std::cout << "Unformatted output: ";
    s.put('c'); // this will set badbit, but not failbit
    std::cout << " fail=" << bool(s.rdstate() & s.failbit);
    std::cout << " bad=" << s.bad() << '\n';
    s.clear();
    std::cout << "Formatted output:   ";
    s << 'c'; // this will set badbit and failbit
    std::cout << " fail=" << bool(s.rdstate() & s.failbit);
    std::cout << " bad=" << s.bad() << '\n';
}

Salida:

a
Unformatted output:  fail=0 bad=1
Formatted output:    fail=1 bad=1

[editar] Ver también

inserciones de datos de caracteres
Original:
inserts character data
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(función) [editar]
inserciones de bloques de caracteres
Original:
inserts blocks of characters
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(función miembro público) [editar]