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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 "seq_preamble.h" int main() { vector<int> ivec; // size should be zero; capacity is implementation defined cout << "ivec: size: " << ivec.size() << " capacity: " << ivec.capacity() << endl; // give ivec 24 elements for (vector<int>::size_type ix = 0; ix != 24; ++ix) ivec.push_back(ix); // size should be 24; capacity will be >= 24 and is implementation defined cout << "ivec: size: " << ivec.size() << " capacity: " << ivec.capacity() << endl; ivec.reserve(50); // sets capacity to at least 50; might be more // size should be 24; capacity will be >= 50 and is implementation defined cout << "ivec: size: " << ivec.size() << " capacity: " << ivec.capacity() << endl; // add elements to use up the excess capacity while (ivec.size() != ivec.capacity()) ivec.push_back(0); // size should be 50; capacity should be unchanged cout << "ivec: size: " << ivec.size() << " capacity: " << ivec.capacity() << endl; ivec.push_back(42); // add one more element // size should be 51; capacity will be >= 51 and is implementation defined cout << "ivec: size: " << ivec.size() << " capacity: " << ivec.capacity() << endl; return 0; }