C++从文件中读取错误的值

Question

我的数据文件包含以下要读入的数字

/*
111
100.00
200.00
50.00
222
200.00
300.00
100
*/

但是当while循环读入customerNumber为100时应该是111,它也会得到其他所有错误的值.比如startsBalance如同阅读

//-9255963134931783000000000000000000000000.00 

其他一切似乎都在读同样的价值.我只是学习文件,所以任何帮助将不胜感激.

#include <iostream>
#include <iomanip>
#include <fstream>
using namespace std;

int main()
{

int customerNumber;
double beginningBalance, purchase, payments, financeCharge, endingBalance;
ifstream inputFile;
ofstream outputFile;

inputFile.open("BeginningBalance.dat");
cout<<"Cust No | Beginning Bal | Finance Charge | Purchases | Payments | Ending Balance"<<endl;

while (inputFile >> customerNumber);
    {
     inputFile >> beginningBalance;
     inputFile >> purchase;
     inputFile >> payments;
     financeCharge = beginningBalance * .01;
     endingBalance = beginningBalance + purchase + financeCharge - payments;
     cout<<setw(5)<<customerNumber<<fixed<<setprecision(2)<<"        "<<beginningBalance<<"        "<<financeCharge<<"          "<<purchase<<"       "<<payments<<"       "<<endingBalance<<endl;
    }


system ("PAUSE");
return 0;
}

Answer 1

尝试从while循环条件后删除分号,看看是否修复了它.

所以改变

while (inputFile >> customerNumber);

至

while (inputFile >> customerNumber)

它现在的方式是什么,它直到它从文件中吃掉所有数据,然后在里面做东西{ ... },并且你已经在EOF中执行的文件读取,所以它们不起作用.