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cpp/string/basic string/to string: differenze tra le versioni

Da cppreference.com.
< cpp‎ | string‎ | basic string
m (r2.7.3) (Bot: Aggiungo de, en, es, fr, ja, pt, ru, zh)
m (Use {{lc}}. Update links. Various fixes.)
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{{cpp/title|to_string}}
 
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{{cpp/string/basic_string/navbar}}
 
{{cpp/string/basic_string/navbar}}
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{{ddcl list begin}}
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{{begin}}
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{{ddcl list header | string}}
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{{header | string}}
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{{| num=1 | =c++11 |
 
std::string to_string( int value );
 
std::string to_string( int value );
 
}}
 
}}
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{{| num=2 | sincec++11 |
 
std::string to_string( long value );
 
std::string to_string( long value );
 
}}
 
}}
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{{| num=3 | sincec++11 |
 
std::string to_string( long long value );
 
std::string to_string( long long value );
 
}}
 
}}
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{{| num=4 | sincec++11 |
 
std::string to_string( unsigned value );
 
std::string to_string( unsigned value );
 
}}
 
}}
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{{ddcl list item | num=5 | notes={{mark since c++11}} |
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{{| num=5 | sincec++11 |
 
std::string to_string( unsigned long value );
 
std::string to_string( unsigned long value );
 
}}
 
}}
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{{| num=6 | sincec++11 |
 
std::string to_string( unsigned long long value );
 
std::string to_string( unsigned long long value );
 
}}
 
}}
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{{| num=7 | sincec++11 |
 
std::string to_string( float value );
 
std::string to_string( float value );
 
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}}
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std::string to_string( double value );
 
std::string to_string( double value );
 
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}}
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{{| num=9 | sincec++11 |
 
std::string to_string( long double value );
 
std::string to_string( long double value );
 
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}}
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{{end}}
  
 
@1@ {{tr|Converte un numero intero decimale con segno in una stringa con il contenuto stesso di quello che {{c|std::sprintf(buf, "%d", value)}} produrrebbe per {{tt|buf}} sufficientemente grande.|Converts a signed decimal integer to a string with the same content as what  {{c|std::sprintf(buf, "%d", value)}} would produce for sufficiently large {{tt|buf}}.}}
 
@1@ {{tr|Converte un numero intero decimale con segno in una stringa con il contenuto stesso di quello che {{c|std::sprintf(buf, "%d", value)}} produrrebbe per {{tt|buf}} sufficientemente grande.|Converts a signed decimal integer to a string with the same content as what  {{c|std::sprintf(buf, "%d", value)}} would produce for sufficiently large {{tt|buf}}.}}
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===Parametri===
 
===Parametri===
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{{param list item | value |{{tr| un valore numerico da convertire| a numeric value to convert}}}}
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{{| value |{{tr| un valore numerico da convertire| a numeric value to convert}}}}
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===Valore di ritorno===
 
===Valore di ritorno===
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===Vedi anche===
 
===Vedi anche===
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[[de:cpp/string/basic string/to string]]
 
[[de:cpp/string/basic string/to string]]

Versione delle 15:11, 2 lug 2013

Questa pagina è stata tradotta in modo automatico dalla versione in ineglese della wiki usando Google Translate.

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Click here for the English version of this page

 
C++
 
Stringhe libreria
Null-stringhe terminate
Original:
Null-terminated strings
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Byte stringhe
Multibyte stringhe
Stringhe larghe
Classi
Original:
Classes
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basic_string
char_traits
 
std::basic_string
Membri funzioni
Original:
Member functions
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basic_string::basic_string
basic_string::operator=
basic_string::assign
basic_string::get_allocator
Elemento accesso
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
Iteratori
Original:
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)
Capacità
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)
Operazioni
Original:
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
Cerca
Original:
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
Costanti
Original:
Constants
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basic_string::npos
Non membri funzioni
Original:
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)
Helper classi
Original:
Helper classes
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hash<std::string>
hash<std::wstring>
hash<std::u32string>
hash<std::u16string>		(C++11)
 
Elemento definito nell'header <string>
std::string to_string( int value );
 (1) (dal C++11)
std::string to_string( long value );
 (2) (dal C++11)
std::string to_string( long long value );
 (3) (dal C++11)
std::string to_string( unsigned value );
 (4) (dal C++11)
std::string to_string( unsigned long value );
 (5) (dal C++11)
std::string to_string( unsigned long long value );
 (6) (dal C++11)
std::string to_string( float value );
 (7) (dal C++11)
std::string to_string( double value );
 (8) (dal C++11)
std::string to_string( long double value );
 (9) (dal C++11)
1)
Converte un numero intero decimale con segno in una stringa con il contenuto stesso di quello che std::sprintf(buf, "%d", value) produrrebbe per buf sufficientemente grande.
Original:
Converts a signed decimal integer to a string with the same content as what std::sprintf(buf, "%d", value) would produce for sufficiently large buf.
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2)
Converte un numero intero decimale con segno in una stringa con il contenuto stesso di quello che std::sprintf(buf, "%ld", value) produrrebbe per buf sufficientemente grande..
Original:
Converts a signed decimal integer to a string with the same content as what std::sprintf(buf, "%ld", value) would produce for sufficiently large buf..
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3)
Converte un numero intero decimale con segno in una stringa con il contenuto stesso di quello che std::sprintf(buf, "%lld", value) produrrebbe per buf sufficientemente grande.
Original:
Converts a signed decimal integer to a string with the same content as what std::sprintf(buf, "%lld", value) would produce for sufficiently large buf.
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You can help to correct and verify the translation. Click here for instructions.
4)
Converte un numero intero senza segno decimale in una stringa con il contenuto stesso di quello che std::sprintf(buf, "%u", value) produrrebbe per buf sufficientemente grande.
Original:
Converts an unsigned decimal integer to a string with the same content as what std::sprintf(buf, "%u", value) would produce for sufficiently large buf.
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You can help to correct and verify the translation. Click here for instructions.
5)
Converte un numero intero senza segno decimale in una stringa con il contenuto stesso di quello che std::sprintf(buf, "%lu", value) produrrebbe per buf sufficientemente grande.
Original:
Converts an unsigned decimal integer to a string with the same content as what std::sprintf(buf, "%lu", value) would produce for sufficiently large buf.
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6)
Converte un numero intero senza segno decimale in una stringa con il contenuto stesso di quello che std::sprintf(buf, "%llu", value) produrrebbe per buf sufficientemente grande.
Original:
Converts an unsigned decimal integer to a string with the same content as what std::sprintf(buf, "%llu", value) would produce for sufficiently large buf.
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@ @ 7,8 Converte un valore in virgola mobile in una stringa con il contenuto stesso di quello che std::sprintf(buf, "%f", value) produrrebbe per buf sufficientemente grande.
Original:
@7,8@ Converts a floating point value to a string with the same content as what std::sprintf(buf, "%f", value) would produce for sufficiently large buf.
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9)
Converte un valore in virgola mobile in una stringa con il contenuto stesso di quello che std::sprintf(buf, "%Lf", value) produrrebbe per buf sufficientemente grande.
Original:
Converts a floating point value to a string with the same content as what std::sprintf(buf, "%Lf", value) would produce for sufficiently large buf.
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Indice

Parametri

value -
un valore numerico da convertire
Original:
a numeric value to convert
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Valore di ritorno

una stringa contenente il valore convertito
Original:
a string holding the converted value
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Esempio

#include <iostream>
#include <string>
 
int main() 
{
    double f = 23.43;
    std::string f_str = std::to_string(f);
    std::cout << f_str << '\n';
}

Output: 

23.430000

Vedi anche

(C++11)
 converte un valore intero od a virgola mobile in una wstring
(funzione) [modifica]
Estratto da "https://it.cppreference.com/mwiki/index.php?title=cpp/string/basic_string/to_string&oldid=26732"