stl vector 函數

C ++ vector :: push_back()函數 (C++ vector::push_back() function)

vector::push_back() is a library function of "vector" header, it is used to insert/add an element at the end of the vector, it accepts an element of the same type and adds the given element at the end of the vector and increases the size of the vector.

vector :: push_back()是“ vector”標頭的庫函數，用于在vector的末尾插入/添加元素，它接受相同類型的元素并在給定的末尾添加給定元素向量并增加向量的大小。

Note: To use vector, include <vector> header.

注意：要使用向量，請包含<vector>標頭。

Syntax of vector::push_back() function

vector :: push_back()函數的語法

vector::push_back(value_type n);

Parameter(s): n – is an element to be added at the end of the vector.

參數： n –是要在向量末尾添加的元素。

Return value: void – In returns nothing.

返回值： void – In不返回任何內容。

Example:

例：

Input:vector<int> v1;v1.push_back(20);v1.push_back(30);v1.push_back(40);v1.push_back(50);Output://if we print the valuesv1: 20 30 40 50

C ++程序演示vector :: push_back()函數的示例 (C++ program to demonstrate example of vector::push_back() function)

//C++ STL program to demonstrate example of //vector::push_back() function#include <iostream> #include <vector> using namespace std;int main() {//vector declarationvector<int> v1;//inserting elements and printing sizecout << "size of v1: " << v1.size() << endl;v1.push_back(10);cout << "size of v1: " << v1.size() << endl;v1.push_back(20);v1.push_back(30);v1.push_back(40);v1.push_back(50);cout << "size of v1: " << v1.size() << endl;//printing all elementscout << "elements of vector v1..." << endl;for (int x : v1)cout << x << " ";cout << endl;return 0; }

Output

輸出量

size of v1: 0 size of v1: 1 size of v1: 5 elements of vector v1... 10 20 30 40 50

Reference: C++ vector::push_back()

參考： C ++ vector :: push_back()

翻譯自: https://www.includehelp.com/stl/vector-push_back-function-with-example.aspx

stl vector 函數

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