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//Download by http://www.NewXing.com /* * This file contains code from "C++ Primer, Fourth Edition", by Stanley B. * Lippman, Jose Lajoie, and Barbara E. Moo, and is covered under the * copyright and warranty notices given in that book: * * "Copyright (c) 2005 by Objectwrite, Inc., Jose 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 Contracts Department * 75 Arlington Street, Suite 300 * Boston, MA 02216 * Fax: (617) 848-7047 */ #include "assoc_preamble.h" #include "assoc_preamble.h" int main() { // map from author to title; there can be multiple titles per author multimap<string, string> authors; // add data to authors authors.insert(pair<string, string>("Alain de Botton", "book1")); authors.insert(pair<string, string>("Alain de Botton", "book2")); authors.insert(pair<string, string>("Alain de Botton", "book3")); authors.insert(pair<string, string>("Alain de Botton", "book4")); // author we'll look for string search_item("Alain de Botton"); // how many entries are there for this author typedef multimap<string, string>::size_type sz_type; sz_type entries = authors.count(search_item); // get iterator to the first entry for this author multimap<string,string>::iterator iter = authors.find(search_item); // loop through the number of entries there are for this author for (sz_type cnt = 0; cnt != entries; ++cnt, ++iter) cout << iter->second << endl; // print each title // definitions of authors and search_item as above // beg and end denote range of elements for this author typedef multimap<string, string>::iterator authors_it; authors_it beg = authors.lower_bound(search_item), end = authors.upper_bound(search_item); // loop through the number of entries there are for this author while (beg != end) { cout << beg->second << endl; // print each title ++beg; } // definitions of authors and search_item as above // pos holds iterators that denote range of elements for this key pair<authors_it, authors_it> pos = authors.equal_range(search_item); // loop through the number of entries there are for this author while (pos.first != pos.second) { cout << pos.first->second << endl; // print each title ++pos.first; } return 0; }