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  1. #include <iostream>
  2.  
  3. template <typename T, int N>
  4. class array {
  5. public:
  6.     array() = default;
  7.     array(std::initializer_list<T> list) {
  8.         std::copy(std::begin(list), std::end(list), data);
  9.     }
  10.  
  11.     const T& operator[](int index) const { return data[index]; }
  12.     T& operator[](int index) { return data[index]; }
  13.  
  14.     int size() const { return N; }
  15.  
  16.     const T* begin() const { return data; }
  17.     T* begin() { return data; }
  18.  
  19.     const T* end() const { return data + N; }
  20.     T* end() { return data + N; }
  21.  
  22. private:
  23.     T data[N];
  24. };
  25.  
  26. int main() {
  27.     array<int, 5> a{1, 2, 3, 4, 5};
  28.     int res = 0;
  29.     for (auto x : a) {
  30.         res += x; 
  31.     }
  32.     std::cout << res << std::endl;  // 15
  33. }
Success #stdin #stdout 0s 4392KB
comments (?)
stdin 
Standard input is empty
stdout 
15
https://ideone.com/lbIjdo
language:
C++ (gcc 8.3)
created:
7 years ago
visibility:
public

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