#include <algorithm>
#include <iostream>
#include <vector>
using namespace std;
int main( )
{
// make a big vector and then deallocate all its memory
const int big_size = 10000;
vector<double> v( big_size );
cout << "Before clearing, the capacity of the vector is "
<< v.capacity() << " and its size is " << v.size();
v.clear();
cout << "\nAfter clearing, the capacity of the vector is "
<< v.capacity() << " and its size is " << v.size();
vector<double>().swap( v );
cout << "\nAfter swapping, the capacity of the vector is "
<< v.capacity() << " and its size is " << v.size();
}
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