相关疑难解决方法(0)

我正试图从Deitel的书中做另一个练习.该程序计算每月利息并打印每个储户的新余额.由于练习是与动态内存相关的章节的一部分,我使用的是"new"和"delete"运算符.出于某种原因,我得到了这两个错误:

LNK2019:函数___tmainCRTStartup中引用的未解析的外部符号WinMain @ 16

致命错误LNK1120:1个未解析的外部因素

这是类头文件.

//SavingsAccount.h
//Header file for class SavingsAccount

class SavingsAccount
{
public:
    static double annualInterestRate;

    SavingsAccount(double amount=0);//default constructor intialize  
                                        //to 0 if no argument

  double getBalance() const;//returns pointer to current balance
  double calculateMonthlyInterest();
  static void modifyInterestRate(double interestRate):

  ~SavingsAccount();//destructor

private:
    double *savingsBalance;
};

具有成员函数定义的Cpp文件

//SavingsAccount class defintion
#include "SavingsAccount.h"

double SavingsAccount::annualInterestRate=0;//define and intialize static data
                                        //member at file scope


SavingsAccount::SavingsAccount(double amount)
:savingsBalance(new double(amount))//intialize savingsBalance to point to new object
{//empty body
}//end of constructor

double SavingsAccount::getBalance()const
{ …