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  1. #include <array>
  2. #include <iostream>
  3.  
  4. int main() {
  5. const std::array<std::array<int, 4u>, 4u> arr{{
  6. {2,1,2,1},
  7. {1,2,2,2},
  8. {1,1,1,1},
  9. {2,1,1,2}
  10. }};
  11.  
  12. for (const auto& rows : arr) {
  13. for (int e : rows) {
  14. std::cout << e << " ";
  15. }
  16. std::cout << std::endl;
  17. }
  18. }
  19.  
Success #stdin #stdout 0s 3340KB
stdin
Standard input is empty
stdout
2 1 2 1 
1 2 2 2 
1 1 1 1 
2 1 1 2