www.gusucode.com > C++ Primer 书籍源代码源码程序 > C++ Primer 书籍源代码源码程序/code/3/init_vec.cpp
//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 <iostream> #include <vector> using std::cout; using std::endl; using std::vector; int main() { // empty vector vector<int> ivec; int val; // give each element a new value for (vector<int>::size_type ix = 0; ix != 10; ++ix) ivec.push_back(ix); cout << "ivec.size: " << ivec.size() << endl; // prints 10 // reset the elements in the vector to zero for (vector<int>::size_type ix = 0; ix != ivec.size(); ++ix) ivec[ix] = 0; // is there anything to print? if (ivec.empty() == false) { cout << "vector contents: " << endl; // print each element separated by a newline for (vector<int>::size_type ix = 0; ix != ivec.size(); ++ix) cout << ivec[ix] << endl; } return 0; }