std::stoi, std::stol, std::stoll

 

C++

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Strings terminadas Original: Null-terminated strings The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

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

basic_string

char_traits

 

std::basic_string

Funções de membro 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_string::basic_string

basic_string::operator=

basic_string::assign

basic_string::get_allocator

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

basic_string::at

basic_string::operator[]

basic_string::front (C++11)

basic_string::back (C++11)

basic_string::data

basic_string::c_str

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

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)

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

basic_string::empty

basic_string::size

basic_string::length

basic_string::max_size

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basic_string::shrink_to_fit (C++11)

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

basic_string::clear

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basic_string::pop_back (C++11)

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basic_string::substr

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

basic_string::find

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basic_string::find_first_of

basic_string::find_first_not_of

basic_string::find_last_of

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

basic_string::npos

Não-membros funções 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+

operator==operator!=operator<operator>operator<=operator>=

swap(std::basic_string)

operator<<operator>>

getline

stoistolstoll (C++11)(C++11)(C++11)

stoulstoull (C++11)(C++11)

stofstodstold (C++11)(C++11)(C++11)

to_string (C++11)

to_wstring (C++11)

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

hash<std::string>hash<std::wstring>hash<std::u32string>hash<std::u16string> (C++11)

 

Definido no cabeçalho <string>
int       stoi(conststd::string& str, size_t *pos =0, int base =10);	(1)	(desde C++11)
long      stol(conststd::string& str, size_t *pos =0, int base =10);	(2)	(desde C++11)
longlong stoll(conststd::string& str, size_t *pos =0, int base =10);	(3)	(desde C++11)

Interpreta um valor inteiro assinado na seqüência str.

Original:

Interprets a signed integer value in the string str.

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Function discards any whitespace characters until first non-whitespace character is found. Then it takes as many characters as possible to form a valid base-n (where n=base) integer number representation and converts them to an integer value. The valid integer value consists of the following parts:

• (opcional) plus or minus sign
• (opcional) prefix (0) indicating octal base (applies only when the base is 8)
• (opcional) prefix (0x or 0X) indicating hexadecimal base (applies only when the base is 16)
• a sequence of digits

The set of valid digits for base-2 integer is 01, for base-3 integer is 012, and so on. For bases larger than 10, valid digits include alphabetic characters, starting from Aa for base-11 integer, to Zz for base-36 integer. The case of the characters is ignored.

O índice do primeiro caractere não convertido é armazenado em pos. Se NULL é passada como pos, é ignorado.

Original:

The index of the first unconverted character is stored in pos. If NULL is passed as pos, it is ignored.

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Parâmetros

str	-	a string para converter Original: the string to convert The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
pos	-	endereço. de um inteiro para armazenar o índice do primeiro caractere não convertido Original: address of an integer to store the index of the first unconverted character The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
base	-	a base do número Original: the number base 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

A seqüência de convertidos para o tipo assinado inteiro especificado.

Original:

The string converted to the specified signed integer type.

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Exceções

• std::invalid_argument se nenhuma conversão poderia ser realizada

  Original:

  std::invalid_argument if no conversion could be performed

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• std::out_of_range se o valor convertido iria cair para fora do intervalo do tipo de resultado.

  Original:

  std::out_of_range if the converted value would fall out of the range of the result type.

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Exemplo

#include <iostream>#include <string>   int main(){std::string test ="45";int myint = stoi(test);std::cout<< myint <<'\n';}

Saída:

45

Veja também

atoi atol atoll	converte uma seqüência de byte para um valor inteiro Original: converts a byte string to an integer value The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (função)
stoul stoull (C++11) (C++11)	converte uma string para um inteiro sem sinal Original: converts a string to an unsigned integer The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (função)
stof stod stold (C++11) (C++11) (C++11)	converte uma string para um valor de ponto flutuante Original: converts a string to an floating point value The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (função)
to_string (C++11)	converte um valor de ponto flutuante para integral ou string Original: converts an integral or floating point value to string The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (função)