std::getline

 

C++

言語

コンセプト

ユーティリティライブラリ

ストリングスライブラリ

コンテナライブラリ

アルゴリズムライブラリ

イテレータライブラリ

ニューメリックスライブラリ

入力/出力ライブラリ

ローカライゼーションライブラリ

正規表現ライブラリ (C++11)

アトミック操作ライブラリ (C++11)

スレッドのサポートライブラリ (C++11)

 

ストリングスライブラリ

NULLで終わる文字列 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.

バイト文字列

文字列をマルチバイト

ワイド文字列

クラス 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

メンバ関数 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

要素アクセスの循環参照を解除するために使用されている 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

イテレータ 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)

容量 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

basic_string::reserve

basic_string::capacity

basic_string::shrink_to_fit (C++11)

操作 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

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

検索 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

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

定数 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

非メンバ関数 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

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)

ヘルパークラス 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)

 

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)	(C + + 11以来)
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)	(C + + 11以来)

getline入力ストリームから文字を読み込み、文字列にそれらを配置します

Original:

getline reads characters from an input stream and places them into a string:

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

1)

UnformattedInputFunctionが影響されない点を除いて、input.gcount()として動作します。構築し、監視オブジェクトをチェックした後、次の手順を実行します

Original:

Behaves as UnformattedInputFunction, except that input.gcount() is not affected. After constructing and checking the sentry object, performs the following:

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

1)

str.erase()呼び出します

Original:

Calls str.erase()

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

2)

次のいずれかが発生する（表示されている順序でチェックされる）までinputにstrを付加そこから文字を抽出します

Original:

Extracts characters from input and appends them to str until one of the following occurs (checked in the order listed)

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

a)

inputでend-of-file状態、ケース内、getlineセットeofbitとリターン.

Original:

end-of-file condition on input, in which case, getline sets eofbit and returns.

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

b)

次の使用可能な入力文字は、区切り文字がdelimから抽出された場合で、Traits::eq(c, delim)、によってテスト、inputですが、strに追加されません.

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.

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

c)

str.max_size()文字は大文字でgetlineセットfailbitと戻り、保存されていた.

Original:

str.max_size() characters have been stored, in which case getline sets failbit and returns.

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

3)

文字が何らかの理由（NULLすらない捨て区切り文字）、getlineセットfailbitとリターンのために抽出されなかった場合は.

Original:

If no characters were extracted for whatever reason (not even the discarded delimiter), getline sets failbit and returns.

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

2)

getline(input, str, input.widen(’\n’))と同じ、つまり、デフォルトの区切り文字は行末文字です.

Original:

Same as getline(input, str, input.widen(’\n’)), that is, the default delimiter is the endline character.

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

パラメータ

input	-	からデータを取得するためのストリーム Original: the stream to get data from The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
str	-	にデータを格納する文字列 Original: the string to put the data into The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
delim	-	区切り文字 Original: the delimiter character The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

値を返します

input

例

次のコードは、その名前を使用してそれらを迎えた後、自分の名前の入力をユーザーに要求します.

Original:

The following code asks the user for their name, then greets them using that name.

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

#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.