std::vector::push_back

 

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std::vector

成员函数 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.

vector::vector

vector::~vector

vector::operator=

vector::assign

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元素的访问 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.

vector::at

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vector::data （C++11）

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

vector::begin vector::cbegin （C++11）

vector::end vector::cend （C++11）

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

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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.

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修饰符 Original: Modifiers 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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void push_back( const T& value );
void push_back( T&& value );		（C++11 起）

定元素追加value所述容器的端部.

Original:

Appends the given element value to the end of the container.

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If the new size() is greater than capacity(), all iterators and references are invalidated. Otherwise no iterators and references are invalidated.

参数

value

-

要追加的元素的值 Original: the value of the element to append The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

要求

1)

value应CopyInsertable

Original:

value shall be CopyInsertable

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2)

value应MoveInsertable

Original:

value shall be MoveInsertable

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返回值

（无）

Original:

(none)

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复杂性

恒定

Original:

Constant.

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为例

下面的代码使用push_back添加到std::vector<int>几个整数

Original:

The following code uses push_back to add several integers to a std::vector<int>:

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#include <vector>
#include <iostream>
 
int main()
{
    std::vector<int> numbers;
 
    numbers.push_back(42);
    numbers.push_back(314159);
 
    for (int i : numbers) { // c++11 range-based for loop
        std::cout << i << '\n';
    }
 
    return 0;
}

Output:

42
314159

另请参阅

None

emplace_back （C++11）	构造就地中的元素，在末端 Original: constructs elements in-place at the end The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. （公共成员函数）
pop_back	删除最后一个元素 Original: removes the last element The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. （公共成员函数）