Vector Capacity vs size



#include <iostream>
#include <vector>
using namespace std;

int main()
{
  vector<char> vectorObject(10);

  cout << "Initial size: " << vectorObject.size() << endl;
  cout << "Initial capacity: " << vectorObject.capacity();
  cout << "\n\n";

  vectorObject.reserve(20); // reserve more space
  cout << "Size after reserve: " << vectorObject.size() << endl;
  cout << "Capacity after reserve: " << vectorObject.capacity();
  cout << "\n\n";

  return 0;
}

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Vector Capacity vs size : Vector « Data Structure « C++

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