c++程序设计—-工程的创建.docVIP

// Lab 1: Account.cpp // Member-function definitions for class Account. #include iostream using std::cout; using std::endl; #include Account.h // include definition of class Account // Account constructor initializes data member balance Account::Account( double initialBalance ) { // if initialBalance is greater than or equal to 0.0, set this value // as the balance of the Account if ( initialBalance = 0.0 ) balance = initialBalance; else // otherwise, output message and set balance to 0.0 { cout Error: Initial balance cannot be negative. endl; balance = 0.0; } // end if...else } // end Account constructor // credit (add) an amount to the account balance void Account::credit( double amount ) { balance = balance + amount; // add amount to balance } // end function credit // debit (subtract) an amount from the account balance // return bool indicating whether money was debited bool Account::debit( double amount ) { if ( amount balance ) // debit amount exceeds balance { cout Debit amount exceeded account balance. endl; return false; } // end if else // debit amount does not exceed balance { balance = balance - amount; return true; } // end else } // end function debit // set the account balance void Account::setBalance( double newBalance ) { balance = newBalance; } // end function setBalance // return the account balance double Account::getBalance() { return balance; } // end function getBalance /************************************************************************** * (C) Copyright 1992-2005 by Deitel Associates, Inc. and * * Pearson Education, Inc. All Rights Reserved. * * * * DISCLAIMER: The authors and publisher of this book have used their * * best efforts in preparing the book. These efforts include the * * development, research, and testin