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  1. #include <iostream>
  2. #include <array>
  3. #include <cstddef>
  4.  
  5. template <std::size_t W, std::size_t H>
  6. class Class {
  7. public:
  8.     Class(const int (&_data)[H][W]) {
  9.         for (std::size_t h = 0; h != H; ++h)
  10.             for (std::size_t w = 0; w != W; ++w)
  11.                 data[h][w] = _data[h][w];
  12.     }
  13.  
  14.     template <typename... Args>
  15.     Class(Args&&... args) {
  16.         const std::array<int, H * W> temp{std::forward<Args>(args)...};
  17.         for (std::size_t h = 0; h != H; ++h)
  18.             for (std::size_t w = 0; w != W; ++w)
  19.                 data[h][w] = temp[h * W + w];
  20.     }
  21.  
  22.     void print() const {
  23.         for (std::size_t y = 0; y != 2; ++y) {
  24.             for (std::size_t x = 0; x != 3; ++x) {
  25.                 std::cout << data[y][x] << " ";
  26.             }
  27.             std::cout << std::endl;
  28.         }
  29.     }
  30. private:
  31.     int data[H][W];
  32. };
  33.  
  34. int main() {
  35.     Class<3, 2> c{ 1, 2, 3, 4, 5, 6 };
  36.     c.print();
  37. }
Success #stdin #stdout 0s 3296KB
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https://ideone.com/1OwQ7r
language:
C++14 (gcc 8.3)
created:
12 years ago
visibility:
secret

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