从txt文件中读取数据建立链表再输出，输出不能用循环语句，甚至空循环语句都不能出现

输出结点时，逐条语句输出可以，但不能用循环语句输出

account.h

#ifndef ACCOUNT
#define ACCOUNT
class Account{
  public:
      //链表类操作
      Account(unsigned int acntNo,float balan=0.0);
      static Account * First(){return pFirst;}
      Account * Next(){return pNext;}
      static void RemoveLink();//删除整个个链表
      static void SaveLink();//保存整个链表
      static void getLink();//从txt文件中读取数据建立链表
      static void linkDisplay();//输出整个链表上的帐户及其余额
      //账户类操作
      unsigned int AccountNo(){return acntNumber;}
      float AccountBalan(){return balance;}
      virtual void Display();//便于统一显示，设为虚函数
      void Deposit(float amount){balance+=amount;}
      virtual void Withdrawal(float amount)=0;
      static Account *getAccount(unsigned int acntNo);//返回指定帐号所在结点
      static void balanceAccount();//查询指定帐号的余额
      static void depositAccount();//向指定帐号存款
      static void WithdrawalAccount();//从指定帐号取款
      //为什么没定义析构函数？
  protected:
    //链表类数据
    static Account *pFirst;
    static Account *pTail;
    Account *pNext;
    //账户类数据
    unsigned int acntNumber;
    float balance;
    const char * acntType="Account";
};
//------------------------------------------------------------------
class Savings: public Account{
  public:
      Savings(unsigned acntNo,float balan=0.0);
      virtual void Withdrawal(float amount);
      virtual void Display();
  protected:
    static float minbalance;//设置透支范围
};
//----------------------------------------------------------------
enum REMIT{remitByPost,remintByCable,remintByother};//信汇、电汇，无

class Checking:public Account{
  public:
      Checking(unsigned acntNo,float balan);
      void SetRemit(REMIT re){remmitance=re;}
      virtual void Withdrawal(float amount);
      virtual void Display();
  protected:
    REMIT remmitance;//汇款方式
};
//--------------------------------------------------------------------

#endif // ACCOUNT
//------------------------------------------------------------------------------------------------------------------
account.cpp

#include <iostream>
#include <fstream>
#include <cstdlib>
#include <cstring>
#include "account.h"

using namespace std;

//静态数据成员
Account * Account::pFirst=0;
Account * Account::pTail=0;

Account::Account(unsigned acntNo,float balan):acntNumber(acntNo),balance(balan),pNext(NULL){
  if(pFirst==0)
    pFirst=pTail=this;
  else
    {
        pTail->pNext=this;
        pTail=this;//新建结点挂到链尾
    }
}

//-----------
void Account::Display(){
  cout<<"Account number:"<<acntNumber<<"   balance:"<<balance<<endl;
}

//-------------------------------------------------------------------------------
float Savings::minbalance=500;//设置透支范围

Savings::Savings(unsigned acntNo,float balan):Account(acntNo,balan){acntType="Savings";}
//
 void Savings::Withdrawal(float amount){
  if(amount>balance+minbalance)
    cout<<"Insufficient funds: balance "<<balance<<",withdrawal "<<amount<<endl;
  else
    balance-=amount;
}
//
 void Savings::Display(){
  cout<<"Savings  ";
  Account::Display();
}
//----------------------------------------------------------------------------------
Checking::Checking(unsigned acntNo,float balan):Account(acntNo,balan),remmitance(remintByother){acntType="Checking";}
//
void Checking::Withdrawal(float amount){
  float tmp=amount;
  if(remmitance==remintByCable)
    tmp+=60;
  if(remmitance==remitByPost)
    tmp+=30;
  if(balance<tmp)
    cout<<"Insufficisent fuds:balance "<<balance<<" ,withdrawal "<<tmp<<endl;
  else
    balance-=tmp;
}
//
void Checking::Display(){
  cout<<"Checking ";
  Account::Display();
}

//--------------------------------------------------------------------------------
//链表类操作
//从txt文件中读取数据建立链表
void getLink(){
  ifstream cin("acc.txt");
  char *type;unsigned int ac;float ba;
  cout<<"hello"<<endl;
  for(;cin>>type>>ac>>ba;){cout<<type<<endl;
   if(!(strcmp(type,"Savings")))
        new Savings(ac,ba);
    else if(!(strcmp(type,"Checking")))
        new Checking(ac,ba);
    else{
        cout<<"error account type :"<<type<<endl;
        exit(1);
    }
  }
  cout<<"world"<<endl;
}
//把整个链表保存在文件acc.txt中
void Account::SaveLink(){

}
//删除整个链表
void Account::RemoveLink(){
  for(Account *q,*p=Account::First();p;p=q){
    q=p->pNext;
    delete p;
  }
}
//输出整个链表上的帐户及其余额
void Account::linkDisplay(){
   Account *p=Account::First();
   for(;p;p=p->Next())
    p->Display();
}
//账户类操作------
//返回指定帐号所在结点
Account * Account::getAccount(unsigned int acntNo){
    Account *p=Account::First();
    for(;p&&p->AccountNo()!=acntNo;p=p->Next());
    return p;
}
//查询指定帐号的余额
void Account::balanceAccount(){
  unsigned int acntNo;
  cout<<"input the account number:";
  cin>>acntNo;
  Account *p=getAccount(acntNo);
  if(!p)
    cout<<"account number :"<<acntNo<<" not exist!"<<endl;
  else
    p->Display();
}
//向指定帐号存款
void Account::depositAccount(){
  unsigned int acntNo;
  float amount;
  cout<<"input the account number and the amount to deposit:"<<endl;
  cin>>acntNo>>amount;
  Account *p=getAccount(acntNo);
  if(!p)
    cout<<"account number :"<<acntNo<<" not exist!"<<endl;
  else{
    p->Deposit(amount);
    p->Display();
  }
}
//从指定帐号取款
void Account::WithdrawalAccount(){
  unsigned int acntNo;
  float amount;
  cout<<"input the account number and the amount to withdrawal:"<<endl;
  cin>>acntNo>>amount;
  Account *p=getAccount(acntNo);
  if(!p)
    cout<<"account number :"<<acntNo<<" not exist!"<<endl;
  else{
    p->Withdrawal(amount);
    p->Display();
  }
}



//--------------------------------------------------------------------------------------------------
acc.txt

Savings 12345 12345.00
Savings 10000 10000.00
Savings 09988 9988.00
Checking 20032 20032.00
Checking 25678 25678.00
Savings 26100 26100.00

  char *type;unsigned int ac;float ba;
  for(;cin>>type>>ac>>ba;)
这就开始不对了

而你在4楼的代码，既~又长，完全看不懂。

对于错误的代码，讨论它“执行正常”或“执行不正常”是没有意义的。
不知道你能理解么，打个比方，一个景点，已经说了严禁跳山。
一个人跳崖，没死，给景区负责人一个嘴巴：“为什么我跳崖没死？”，景区负责人只能委屈地告诉他“我们只能保证你不跳崖就不会摔死，没能力保证你跳崖必须死”；
此人又跳崖，死了，头七托梦又找到负责人：“为什么我跳崖死了？”，景区负责人只能委屈地告诉他“我们只能保证你不跳崖就不会摔死，没能力保证你跳崖必须活”。