subscript.cpp
资源名称:CppPrimer.rar [点击查看]
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上传日期:2022-06-29
资源大小:356k
文件大小:2k
源码类别:
书籍源码
开发平台:
Visual C++
- /*
- * 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 <vector>
- using std::vector;
- #include <iostream>
- using std::cout; using std::endl;
- class Foo {
- public:
- Foo(): data(100) { for (int i = 0; i != 100; ++i) data[i] = i; }
- int &operator[](const size_t);
- const int &operator[](const size_t) const;
- // other interface members
- private:
- vector<int> data;
- // other member data and private utility functions
- };
- int& Foo::operator[](const size_t index)
- {
- return data[index]; // no range checking on index
- }
- const int& Foo::operator[](const size_t index) const
- {
- return data[index]; // no range checking on index
- }
- int main() {
- Foo f;
- cout << f[50] << endl;
- return 0;
- }