Espacios de nombres
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std::getline

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< cpp‎ | string‎ | basic string


 
 
Strings biblioteca
Terminadas en nulo
Original:
Null-terminated strings
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Cadenas de bytes
Multibyte cuerdas
Cadenas anchas
Clases
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Classes
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basic_string
char_traits
 
std::basic_string
Las funciones miembro
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Member functions
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basic_string::basic_string
basic_string::operator=
basic_string::assign
basic_string::get_allocator
Elemento acceso
Original:
Element access
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basic_string::at
basic_string::operator[]
basic_string::front(C++11)
basic_string::back(C++11)
basic_string::data
basic_string::c_str
Los iteradores
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Iterators
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basic_string::begin
basic_string::cbegin

(C++11)
basic_string::end
basic_string::cend

(C++11)
basic_string::rbegin
basic_string::crbegin

(C++11)
basic_string::rend
basic_string::crend

(C++11)
Capacidad
Original:
Capacity
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basic_string::empty
basic_string::size
basic_string::length
basic_string::max_size
basic_string::reserve
basic_string::capacity
basic_string::shrink_to_fit(C++11)
Operaciones
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Operations
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basic_string::clear
basic_string::insert
basic_string::erase
basic_string::push_back
basic_string::pop_back(C++11)
basic_string::append
basic_string::operator+=
basic_string::compare
basic_string::replace
basic_string::substr
basic_string::copy
basic_string::resize
basic_string::swap
Buscar
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Search
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basic_string::find
basic_string::rfind
basic_string::find_first_of
basic_string::find_first_not_of
basic_string::find_last_of
basic_string::find_last_not_of
Constantes
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Constants
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basic_string::npos
Terceros funciones
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Non-member functions
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operator+
operator==
operator!=
operator<
operator>
operator<=
operator>=
swap(std::basic_string)
operator<<
operator>>
getline
stoi
stol
stoll
(C++11)
(C++11)
(C++11)
stoul
stoull
(C++11)
(C++11)
stof
stod
stold
(C++11)
(C++11)
(C++11)
to_string(C++11)
to_wstring(C++11)
Clases de ayuda
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Helper classes
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hash<std::string>
hash<std::wstring>
hash<std::u32string>
hash<std::u16string>
(C++11)
 
Defined in header <string>
template< class CharT, class Traits, class Allocator >

std::basic_istream<CharT,Traits>& getline( std::basic_istream<CharT,Traits>& input,
                                           std::basic_string<CharT,Traits,Allocator>& str,

                                           CharT delim );
(1)
template< class CharT, class Traits, class Allocator >

std::basic_istream<CharT,Traits>& getline( std::basic_istream<CharT,Traits>&& input,
                                           std::basic_string<CharT,Traits,Allocator>& str,

                                           CharT delim );
(1) (desde C++11)
template< class CharT, class Traits, class Allocator >

std::basic_istream<CharT,Traits>& getline( std::basic_istream<CharT,Traits>& input,

                                           std::basic_string<CharT,Traits,Allocator>& str );
(2)
template< class CharT, class Traits, class Allocator >

std::basic_istream<CharT,Traits>& getline( std::basic_istream<CharT,Traits>&& input,

                                           std::basic_string<CharT,Traits,Allocator>& str );
(2) (desde C++11)
getline lee los caracteres de una secuencia de entrada y los coloca en una cadena:
Original:
getline reads characters from an input stream and places them into a string:
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1)
Se comporta como UnformattedInputFunction, excepto que input.gcount() no se ve afectada. Después de la construcción y comprobación del objeto centinela, realiza lo siguiente:
Original:
Behaves as UnformattedInputFunction, except that input.gcount() is not affected. After constructing and checking the sentry object, performs the following:
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1)
Llamadas str.erase()
Original:
Calls str.erase()
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2)
Extrae caracteres de input y añade a ellos str hasta una de las siguientes situaciones (comprobado en el orden indicado)
Original:
Extracts characters from input and appends them to str until one of the following occurs (checked in the order listed)
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a)
al final de su archivo de estado en input, en cuyo caso, conjuntos getline eofbit y vuelve .
Original:
end-of-file condition on input, in which case, getline sets eofbit and returns.
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b)
el siguiente carácter de entrada disponible es delim, según pruebas realizadas por Traits::eq(c, delim), en cuyo caso se extrae el carácter delimitador de input, pero no se anexa a str .
Original:
the next available input character is delim, as tested by Traits::eq(c, delim), in which case the delimiter character is extracted from input, but is not appended to str.
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c)
str.max_size() personajes han sido almacenados, en cuyo caso getline conjuntos failbit y vuelve .
Original:
str.max_size() characters have been stored, in which case getline sets failbit and returns.
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3)
Si hay personajes fueron extraídos por la razón que sea (ni siquiera el delimitador descartado), getline conjuntos failbit y vuelve .
Original:
If no characters were extracted for whatever reason (not even the discarded delimiter), getline sets failbit and returns.
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2)
Igual que getline(input, str, input.widen(’\n’)), es decir, el delimitador predeterminado es el carácter de línea de fondo .
Original:
Same as getline(input, str, input.widen(’\n’)), that is, the default delimiter is the endline character.
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[editar] Parámetros

input -
la corriente para obtener los datos
Original:
the stream to get data from
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str -
la cadena para poner los datos en
Original:
the string to put the data into
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delim -
el carácter delimitador
Original:
the delimiter character
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[editar] Valor de retorno

input

[editar] Ejemplo

El código siguiente pregunta al usuario por su nombre, y luego saluda con ese nombre .
Original:
The following code asks the user for their name, then greets them using that name.
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#include <string>
#include <iostream>
 
int main()
{
    std::string name;
    std::cout << "What is your name? ";
    std::getline(std::cin, name);
    std::cout << "Hello " << name << ", nice to meet you.";
}

Possible output:

What is your name? John Q. Public
Hello John Q. Public, nice to meet you.