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std::basic_string::substr

提供: cppreference.com
< cpp‎ | string‎ | basic string

 
 
ストリングスライブラリ
NULLで終わる文字列
Original:
Null-terminated strings
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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
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basic_string
char_traits
 
std::basic_string
メンバ関数
Original:
Member functions
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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
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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
イテレータ
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)
容量
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)
操作
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
検索
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
定数
Original:
Constants
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basic_string::npos
非メンバ関数
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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)
ヘルパークラス
Original:
Helper classes
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hash<std::string>
hash<std::wstring>
hash<std::u32string>
hash<std::u16string>
(C++11)
 
basic_string substr( size_type pos = 0,
                     size_type count = npos );
部分文字列[pos, pos+count)を返します。要求された部分文字列が文字列の終わりを超えて続くか、またはcount == npos場合場合は、返される部分は[pos, size())です.
Original:
Returns a substring [pos, pos+count). If the requested substring lasts past the end of the string, or if count == npos, the returned substring is [pos, size()).
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目次

[編集] パラメータ

pos -
搭載した最初の文字の位置
Original:
position of the first character to include
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count -
部分文字列の長さ
Original:
length of the substring
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[編集] 値を返します

部分文字列を含む文字列[pos, pos+count).
Original:
String containing the substring [pos, pos+count).
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[編集] 例外

std::out_of_range if pos > size().

[編集] 複雑

countのリニア
Original:
Linear in count
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[編集]

#include <string>
#include <iostream>
 
int main()
{
    std::string a = "0123456789abcdefghij";
 
    std::string sub1 = a.substr(10);
    std::cout << sub1 << '\n';
 
    std::string sub2 = a.substr(5, 3);
    std::cout << sub2 << '\n';
 
    std::string sub3 = a.substr(12, 100);
    std::cout << sub3 << '\n';
 }

Output:

abcdefghij
567
cdefghij

[編集] も参照してください

コピー文字
Original:
copies characters
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(パブリックメンバ関数) [edit]