text: /*
   * This file contains code from "C++ Primer, Fifth Edition", by Stanley B.
   * Lippman, Josee Lajoie, and Barbara E. Moo, and is covered under the
   * copyright and warranty notices given in that book:
   * 
   * "Copyright (c) 2013 by Objectwrite, Inc., Josee Lajoie, and Barbara E. Moo."
   * 
   * 
   * "The authors and publisher have taken care in the preparation of this book,
   * but make no expressed or implied warranty of any kind and assume no
   * responsibility for errors or omissions. No liability is assumed for
   * incidental or consequential damages in connection with or arising out of the
   * use of the information or programs contained herein."
   * 
   * Permission is granted for this code to be used for educational purposes in
   * association with the book, given proper citation if and when posted or
   * reproduced.Any commercial use of this code requires the explicit written
   * permission of the publisher, Addison-Wesley Professional, a division of
   * Pearson Education, Inc. Send your request for permission, stating clearly
   * what code you would like to use, and in what specific way, to the following
   * address: 
   * 
   * 	Pearson Education, Inc.
   * 	Rights and Permissions Department
   * 	One Lake Street
   * 	Upper Saddle River, NJ  07458
   * 	Fax: (201) 236-3290
  */ 
  
  #include <vector>
  using std::vector;
  
  #include <string>
  using std::string;
  
  #include <algorithm>
  using std::fill; using std::fill_n;
  
  #include <numeric>
  using std::accumulate;
  
  #include <iterator>
  using std::back_inserter;
  
  #include <iostream>
  using std::cin; using std::cout; using std::endl;
  
  int main()
  {
  	vector<int> vec(10);              // default initialized to 0
  	fill(vec.begin(), vec.end(), 1);  // reset each element to 1
  
  	// sum the elements in vec starting the summation with the value 0
  	int sum = accumulate(vec.begin(), vec.end(), 0);
  	cout << sum << endl;
  	
  	// set a subsequence of the container to 10
  	fill(vec.begin(), vec.begin() + vec.size()/2, 10);
  	cout << accumulate(vec.begin(), vec.end(), 0) << endl;
  
  	// reset the same subsequence to 0
  	fill_n(vec.begin(), vec.size()/2, 0);
  	cout << accumulate(vec.begin(), vec.end(), 0) << endl;
  
  	// create 10 elements on the end of vec each with the value 42
  	fill_n(back_inserter(vec), 10, 42);
  	cout << accumulate(vec.begin(), vec.end(), 0) << endl;
  	
  	// concatenate elements in a vector of strings and store in sum 
  	vector<string> v;
  	string s;
  	while (cin >> s)
  		v.push_back(s);
  	string concat = accumulate(v.begin(), v.end(), string(""));
  	cout << concat << endl;
  	
  	return 0;
  }
  
  