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  1. #include <iostream>
  2. #include <vector>
  3.  
  4. using namespace std;
  5.  
  6.  
  7. int main() {
  8. 	// your code goes here
  9.  
  10. 	vector<int> v;
  11. 	size_t prevCapacity = v.capacity();
  12.  
  13. 	size_t capacityChangeCount = 0;
  14. 	int val = 0;
  15.  
  16. 	for(; capacityChangeCount<25; ++val)
  17. 	{
  18. 		v.push_back(val);
  19. 		size_t curCapacity = v.capacity();
  20. 		if (prevCapacity!=curCapacity)
  21. 		{
  22. 			cout<<"Capacity changed from "<<prevCapacity<<" to "<<curCapacity;
  23. 			size_t percent = 0;
  24. 			if (prevCapacity)
  25. 			{
  26. 			    percent = 100*curCapacity/prevCapacity;
  27. 			    cout<<" - "<<percent<<"%";
  28. 			}
  29. 			cout<<"\n";
  30.  
  31. 			prevCapacity = curCapacity;
  32. 			++capacityChangeCount;
  33. 		}
  34. 	}
  35.  
  36. 	return 0;
  37. }
Success #stdin #stdout 0.05s 68968KB
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stdin
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Standard input is empty
stdout
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Capacity changed from 0 to 1
Capacity changed from 1 to 2 - 200%
Capacity changed from 2 to 4 - 200%
Capacity changed from 4 to 8 - 200%
Capacity changed from 8 to 16 - 200%
Capacity changed from 16 to 32 - 200%
Capacity changed from 32 to 64 - 200%
Capacity changed from 64 to 128 - 200%
Capacity changed from 128 to 256 - 200%
Capacity changed from 256 to 512 - 200%
Capacity changed from 512 to 1024 - 200%
Capacity changed from 1024 to 2048 - 200%
Capacity changed from 2048 to 4096 - 200%
Capacity changed from 4096 to 8192 - 200%
Capacity changed from 8192 to 16384 - 200%
Capacity changed from 16384 to 32768 - 200%
Capacity changed from 32768 to 65536 - 200%
Capacity changed from 65536 to 131072 - 200%
Capacity changed from 131072 to 262144 - 200%
Capacity changed from 262144 to 524288 - 200%
Capacity changed from 524288 to 1048576 - 200%
Capacity changed from 1048576 to 2097152 - 200%
Capacity changed from 2097152 to 4194304 - 200%
Capacity changed from 4194304 to 8388608 - 200%
Capacity changed from 8388608 to 16777216 - 200%
https://ideone.com/KVGPku
language:
C++ (gcc 8.3)
created:
5 years ago
visibility:
public

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