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  1. #include <iostream>
  2. #include <vector>
  3.  
  4. class Foo
  5. {
  6. public:
  7. 	Foo(int a, int b) : a(a), b(b) {}
  8. 	int a, b;
  9. };
  10.  
  11. class Bar : public Foo
  12. {
  13. public:
  14. 	Bar(int a, int b, int c, int d, int e, int f) :
  15. 		Foo(a, b), c(c), d(d), e(e), f(f) {}
  16. 	void print()
  17. 	{
  18. 		std::cout << a << " " << b << " " << c << " " << d << " " << e << " " << f << '\n';
  19. 	}
  20. 	int c, d, e, f;
  21. };
  22.  
  23.  
  24. int main(int argc, char** argv)
  25. {
  26. 	Bar bar0(0, 1, 2, 3, 4, 5);
  27. 	Bar bar1(6, 7, 8, 9, 10, 11);
  28.  
  29. 	std::cout << "bar0 ";
  30. 	bar0.print();
  31. 	std::cout << "bar1 ";
  32. 	bar1.print();
  33.  
  34. 	std::vector<Foo> store;
  35. 	store.push_back(bar0);
  36. 	store.push_back(bar1);
  37.  
  38. 	auto downcast0 = static_cast<Bar*>(&store[0]);
  39. 	auto downcast1 = static_cast<Bar*>(&store[1]);
  40.  
  41. 	std::cout << "downcast0 ";
  42. 	downcast0->print();
  43. 	std::cout << "downcast1 ";
  44. 	downcast1->print();
  45.  
  46. 	system("pause");
  47. }
Success #stdin #stdout #stderr 0s 4448KB
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stdin
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Standard input is empty
stdout
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bar0 0 1 2 3 4 5
bar1 6 7 8 9 10 11
downcast0 0 1 6 7 0 0
downcast1 6 7 0 0 57681 0
stderr
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sh: 1: pause: not found
https://ideone.com/iBzONa
language:
C++14 (gcc 8.3)
created:
4 years ago
visibility:
public

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