debug 编译出错，并且随便修改一处代码就编译成功。

xlshn 2011-12-17 08:42:59

清理解决方案后，debug编译又出错，是怎么回事。release编译正常。

1>p4221.obj : error LNK2019: 无法解析的外部符号 "public: __thiscall Checking::Checking(class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> >,double)" (??0Checking@@QAE@V?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@N@Z)，该符号在函数 _main 中被引用
account.h

#ifndef HEADER_ACCOUNT

#define HEADER_ACCOUNT



#include<string>

using namespace std;

class Account{

	string acntNumber;

	

public:

	double balance;

	Account(string acntNo,double balan=0);

	virtual void display()const;

	virtual void withdrawal1();

};

#endif

checking.h

#ifndef HEADER_CHECKING

#define HEADER_CHECKING



#include<iostream>

#include"account.h"

using namespace std;





class Checking:public Account{



public:

	Checking(string acntNo,double balan=0.0);



	void withdrawal1();

	void display()const;



};

#endif

savings.h

#ifndef HEADER_SAVING

#define HEADER_SAVING



#include<iostream>

#include"account.h"

class Savings:public Account{

	static int minBalance;

public:

	Savings(string acntNo,double balan=0.0):Account(acntNo,balan){}

	void display()const;



	void withdrawal1();

};

#endif

account.cpp

#include<iostream>

#include<fstream>

#include<string>

using namespace std;

#include"account.h"

Account::Account(string acntNo,double balan):acntNumber(acntNo),balance(balan){}

void Account::display()const{

	cout<<"Account:"+acntNumber+"="<<balance<<"\n" ;

}

void Account::withdrawal1(){

	ifstream inwithdrawal1("c:\\withdrawal.txt",ios::in);

	string acntNo1;int amount1;

	for(;inwithdrawal1>>acntNo1>>amount1; )

		if(!((acntNo1=="x")&&(amount1==0))){

			if(acntNumber==acntNo1){

				balance-=amount1;

			}

		}

}

checkings.cpp

#include"checkings.h"

#include <iostream>

using namespace std;



Checking::Checking(string acntNo,double balan):Account(acntNo,balan){}//,remittance(other)

void Checking::display()const{

	cout<<"Checking ";

	Account::display();

}





void Checking::withdrawal1(){

	Account::withdrawal1();

}

#include"checkings.h"

#include"savings.h"

//#include<iostream>

#include<fstream>

#include<string>

#include<vector>



using namespace std;



int main(){

	vector<Savings*> sav;

	vector<Checking*> chec;



	ifstream in("c:\\p4421.txt",ios::in);

	string acntNo;double amount;

	for(;in>>acntNo>>amount;)//

	{

		if(!(acntNo=="x"&&amount==0))

		if(!((static_cast<int>(acntNo.find("savings"))==-1)))

		{	(sav.push_back(new Savings(acntNo,amount)));}

		else

		{

			(chec.push_back(new Checking(acntNo,amount)));

		}



	

	

					

			

	}

		for(vector<Savings*>::iterator it=sav.begin();it!=sav.end();++it){

			(*it)->display();

			(*it)->withdrawal1();

			(*it)->display();

		}

		for(vector<Checking*>::iterator it=chec.begin();it!=chec.end();it++){

			(*it)->display();

			(*it)->withdrawal1();

			(*it)->display();

		}

	for(vector<Savings*>::iterator it=sav.begin();it!=sav.end();it++)

		delete *it;

	for(vector<Checking*>::iterator it=chec.begin();it!=chec.end();it++)

		delete *it;

	system("pause");

}

savings.cpp

#include"savings.h"





 int Savings::minBalance=0;



 void Savings::display()const{

	 cout<<"Savings ";

	 Account::display();

 }





 void Savings::withdrawal1(){

	 Account::withdrawal1();

 }

p4421.txt
savings123 70000
checking661 20000
savings128 2000
savings131 5000
checking681 200000
checking688 10000
x 0
withdrawal.txt
savings123 5000
savings131 5060
checking661 30000
checking688 1000
x 0

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