force the vector to reallocate : vector resize « vector « C++ Tutorial

1. C++ Tutorial
2. vector
3. vector resize

#include <algorithm>
#include <iostream>
#include <vector>

using namespace std;

int main( )
{
   vector<int> v( 10, 66 );
   v[1] = 100;

   // get an iterator that points to the maximum
   vector<int>::iterator before_itr = max_element( v.begin(), v.end() );
   cout << "The maximum before resizing is " << *before_itr;

   // make the index of the maximum
   vector<int>::difference_type max_index = before_itr - v.begin();

   // force the vector to reallocate
   v.resize( v.capacity() + 1 );

}