Use assign and push_back, push_front to insert element to a deque : deque push « deque « C++ Tutorial

1. C++ Tutorial
2. deque
3. deque push

/* The following code example is taken from the book
 * "The C++ Standard Library - A Tutorial and Reference"
 * by Nicolai M. Josuttis, Addison-Wesley, 1999
 *
 * (C) Copyright Nicolai M. Josuttis 1999.
 * Permission to copy, use, modify, sell and distribute this software
 * is granted provided this copyright notice appears in all copies.
 * This software is provided "as is" without express or implied
 * warranty, and with no claim as to its suitability for any purpose.
 */
#include <iostream>
#include <deque>
#include <string>
#include <algorithm>
#include <iterator>
using namespace std;

int main()
{
    // create empty deque of strings
    deque<string> coll;

    // insert several elements
    coll.assign (3, string("string"));
    coll.push_back ("last string");
    coll.push_front ("first string");

    // print elements separated by newlines
    copy (coll.begin(), coll.end(),
          ostream_iterator<string>(cout,"\n"));
    cout << endl;

}

first string
string
string
string
last string