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  1. #include <vector>
  2. #include <iostream>
  3.  
  4. class Vector
  5. {
  6. public:
  7.   float x,y;
  8. };
  9.  
  10. int main()
  11. {    
  12.   // uninitialized grid[0] and grid[1]
  13.   std::vector<Vector> grid(2);
  14.  
  15.   // (5, 3) stored in grid[2]
  16.   // element constructed directly in "grid"
  17.   grid.emplace_back(Vector{5.f, 3.f}); 
  18.  
  19.   std::cout << grid[2].x << "," << grid[2].y << '\n';
  20.   return 0;
  21. }
  22.  
Success #stdin #stdout 0s 2984KB
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Standard input is empty
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5,3
https://ideone.com/sVw9CO
language:
C++14 (gcc 8.3)
created:
10 years ago
visibility:
secret

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