Account.h
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上传日期:2022-06-29
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书籍源码
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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 <string>
- class Account {
- public:
- // interface functions here
- void applyint() { amount += amount * interestRate; }
- friend int main();
- double balance() { return amount; }
- public:
- static double rate() { return interestRate; }
- static void rate(double); // sets a new rate
- private:
- std::string owner;
- double amount;
- static double interestRate;
- static double initRate();
- private:
- static const std::string accountType;
- private:
- static const int period = 30; // interest posted every 30 days
- double daily_tbl[period]; // ok: period is constant expression
- };
- using std::string;
- const string Account::accountType("Savings Account");
- void Account::rate(double newRate)
- {
- interestRate = newRate;
- }