C++11之array原理及使用

标签：c++11   数组   

template< 
    class T, 
    std::size_t N 
> struct array;

template <typename T, int n>
class myArray
{
  public:
    myArray() {a = new T[n];}
    ~myArray() {delete[] a;}
    T& operator[](int i) {return *(a+i);}


  private:
    T* a;
};

array<int, 5> arr1 = {1, 2, 3, 4, 5}；

或者

array<int, 5> arr1{{1, 2, 3, 4, 5}}；

int n1 = arr1[0];
int n2 = arr1.at(0); 

for(size_t i = 0; i < arr1.size(); ++i)
{
	cout << arr1[0]<< endl;
	// cout << arr1.at(0)<< endl;
}

array<array<int, 3>, 2> arr2d = {11,12,13,21,22,23};

int n3 = arr2d[0][0];

for(size_t i = 0; i < arr2d.size(); ++i)
{
	for(size_t j= 0; j < arr2d[i].size(); ++j)
	{
		cout << arr2d[i][j] << '\t';
	}
	cout << endl;
}

C++11之array原理及使用

标签：c++11   数组   

原文地址：http://blog.csdn.net/xufeng0991/article/details/43191271