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"array" is a container in C++ STL, which has fixed size, which is defined in "array" header.

“ array”是C ++ STL中的一個容器，具有固定大小，在“ array”標頭中定義。

Declaration:

宣言：

array <data_type, size> array_name = {initializer_list};Example:array<int,5> values {10, 20, 30, 40, 50};

Array class's common functions:

數組類的常用功能：

array::operator[] - Gets and sets a reference to an element based on given index.

array :: operator [] -根據給定的索引獲取并設置對元素的引用。

array.empty() - Returns true if array is empty

array.empty() -如果數組為空，則返回true

array.size() - Returns the total number of elements in the array

array.size() -返回數組中元素的總數

array.front() - Return the first element

array.front() -返回第一個元素

array.back() - Returns the last element

array.back() -返回最后一個元素

array.at(index) - Returns the element from given index

array.at(index) -返回給定索引中的元素

array.begin() - Returns the reference pointing to the first element

array.begin() -返回指向第一個元素的引用

array.end() - Returns the reference punting to the last element

array.end() -返回指向最后一個元素的引用

Example:

例：

#include <iostream> #include <array>using namespace std;int main() {//array declaring and initializationarray<int, 5> arr = {10, 20, 30, 40, 50};//checking array is empty or not by using empty()if(arr.empty())cout<<"Array is empty!!!"<<endl;elsecout<<"Array is not empty!!!"<<endl;//Array functionscout<<"size: " << arr.size() <<endl;cout<<"first element: " << arr.front() <<endl;cout<<"last element: " << arr.back() <<endl;cout<<"0th element: " << arr.at(0) <<endl;cout<<"3rd element: " << arr.at(3) <<endl;//printing all array elements are: ";for(auto i = arr.begin () ; i != arr.end(); i++)cout<<*i<<" ";cout<<endl;return 0; }

Output

輸出量

Array is not empty!!!size: 5first element: 10last element: 500th element: 103rd element: 4010 20 30 40 50

Reference: C++ std::array

參考： C ++ std :: array

翻譯自: https://www.includehelp.com/stl/array-in-cpp-standard-template-library-with-its-common-functions.aspx

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