试图将C 文件写入文件时获得错误的结果

首先要注意我正在使用Visual Studio和预编译标头，因此我的标题配置有些不同。

当我编译您的代码时，编译器肯定会警告我使用" int"是一个问题。除非我确定我不需要，否则我总是会删除警告，除非我确定自己可以安全地忽略警告。

对于"雇员"，我有：

#pragma once
using namespace std;
class employee
{
public:
    void readData(ifstream& inf);
    //Precondition: File must exist, be accessible, and have the appropriate contents
    //Postcondition: The contents in the file are assigned to a variable. 
    void Compute(double basepay);
    //Precondition: basepay = $800
    //Postcondition: Salary is found using the basepay plus the three other basepays percentages. 
    void print(ofstream& outf) const;
    //Precondition:  The new values (ID and salary) must be updated and accessible. 
    //Postcondition: The ID and salary must be displayed in an output file. The salary must be in the proper format.  
    employee();
    //Precondition:  The variables ID, Job_class, Years, Ed, and sal must have been created already. 
    //Postcondition: the variables ID, Job_class, Years, Ed, and sal are all set to zero. 
private:
    int ID;
    int Job_class;
    int Years;
    int Ed;
    double sal;
};

请注意，" sal"是双人。

for"雇员.cpp"我有：

#include "stdafx.h"
#include "employee.h"
using namespace std;

void employee::readData(ifstream& inf)
{
    inf >> ID >> Job_class >> Years >> Ed;
}
void employee::Compute(double basepay)
{
    //int extra = .01;
    //int bp1 = 0;
    //int bp2 = 0;
    //int bp3 = 0;
    double extra = .01;
    double bp1 = 0;
    double bp2 = 0;
    double bp3 = 0;
    if (Job_class == 1)
    {
        bp1 = basepay*.05;
    }
    if (Job_class == 2)
    {
        bp1 = basepay*.10;
    }
    if (Job_class == 3)
    {
        bp1 = basepay*.20;
    }
    if (Years > 0 && <= 10)
    {
        bp2 = basepay*.05;
    }
    if (Years> 10)
    {
        bp2 = basepay*(.05 + extra);
    }
    if (Ed == 1)
    {
        bp3 = 0;
    }
    if (Ed == 2)
    {
        bp3 = basepay * 05;
    }
    if (Ed == 3)
    {
        bp3 = basepay*.12;
    }
    if (Ed == 4)
    {
        bp3 = basepay*.20;
    }
    sal = basepay + bp1 + bp2 + bp3;
}

void employee::print(ofstream& outf) const
{
    outf << ID << setw(15) << fixed << showpoint << setprecision(2) << "$ " <<
        sal << endl;
}
employee::employee()  // default constructor
{
    ID = 0;
    Job_class = 0;
    Years = 0;
    Ed = 0;
    sal = 0.0;
}

对于主我有：

#include "stdafx.h"
using namespace std;
#include "employee.h"
int main()
{
    double basepay = 800;
    employee emp;
    ifstream inf;
    inf.open("G:\Temporary\employee.txt");
    ofstream outf;
    outf.open("G:\Temporary\employeeout.txt");
    if (!inf)
    {
        cout << " *** Input file does not exist! *** " << endl;
        return 1;
    }
    outf << "ID #" << setw(20) << "Salary" << endl;
    outf << "****************************" << endl;
    while (!inf.eof())
    {
        emp.readData(inf);
        emp.Compute(basepay);
        emp.print(outf);
    }
    inf.close();
    outf.close();
    return 0;
}

for"雇员.txt"我有：

1078 2 12 3
1070 3 10 4

请注意，没有逗号

for" employeeout.txt"我有：

ID #              Salary
****************************
1078             $ 1024.00
1070             $ 1160.00
1070             $ 1160.00

请注意，该程序正在两次读取最后一行。我没有解决这个问题；我认为这是个人喜好如何处理的问题，以便您可以做到这一点。

整数舍入。这似乎是一个问题。从使用int切换到使用double。