Use subscript operator to modify element at location 1 : deque subscript indexer « deque « C++ Tutorial

1. C++ Tutorial
2. deque
3. deque subscript indexer

#include <iostream>
using std::cout;
using std::endl;

#include <deque>     // deque class-template definition
#include <algorithm> // copy algorithm
#include <iterator>  // ostream_iterator

int main()
{
   std::deque< double > values; // create deque of doubles
   std::ostream_iterator< double > output( cout, " " );

   // insert elements in values
   values.push_front( 2.2 );
   values.push_front( 3.5 );
   values.push_back( 1.1 );

   cout << "values contains: ";
   std::copy( values.begin(), values.end(), output );

   // use subscript operator to modify element at location 1
   values[ 1 ] = 5.4;
   cout << "\nAfter values[ 1 ] = 5.4, values contains: ";
   std::copy( values.begin(), values.end(), output );

   cout << endl;
   return 0;
}

values contains: 3.5 2.2 1.1
After values[ 1 ] = 5.4, values contains: 3.5 5.4 1.1