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  1. #include <iostream>
  2. #include <vector>
  3.  
  4. int main() {
  5.  
  6. 	std::vector<int> v;
  7. 	auto cap = v.capacity();
  8. 	int capChanged = 20;
  9.  
  10. 	while(capChanged)
  11. 	{
  12. 		std::cout << "size=" << v.size() << " capacity=" << v.capacity() << std::endl;
  13. 		if( cap == v.capacity() )
  14. 		{
  15. 			v.resize(cap+1);
  16. 			cap = v.capacity();
  17. 			capChanged--;
  18. 		}
  19. 	}
  20.  
  21. 	return 0;
  22. }
Success #stdin #stdout 0s 3472KB
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stdin
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Standard input is empty
stdout
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size=0 capacity=0
size=1 capacity=1
size=2 capacity=2
size=3 capacity=4
size=5 capacity=6
size=7 capacity=10
size=11 capacity=14
size=15 capacity=22
size=23 capacity=30
size=31 capacity=46
size=47 capacity=62
size=63 capacity=94
size=95 capacity=126
size=127 capacity=190
size=191 capacity=254
size=255 capacity=382
size=383 capacity=510
size=511 capacity=766
size=767 capacity=1022
size=1023 capacity=1534
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language:
C++14 (gcc 8.3)
created:
10 years ago
visibility:
secret

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