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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 <string> #include <iostream> using std::string; using std::cout; using std::endl; int main() { string numerics("0123456789"); string name("r2d2"); string::size_type pos = name.find_first_of(numerics); cout << "found number at index: " << pos << " element is " << name[pos] << endl; { string::size_type pos = 0; // each trip reset pos to the next instance in name while ((pos = name.find_first_of(numerics, pos)) != string::npos) { cout << "found number at index: " << pos << " element is " << name[pos] << endl; ++pos; // move to the next character } } string river("Mississippi"); string::size_type first_pos = river.find("is"); // returns 1 string::size_type last_pos = river.rfind("is"); // returns 4 cout << "find returned: " << first_pos << " rfind returned: " << last_pos << endl; { string numbers("0123456789"); string dept("03714p3"); // returns 5, which is the index to the character 'p' string::size_type pos = dept.find_first_not_of(numbers); cout << "first_not returned: " << pos << endl; } return 0; }