遇到读写文件问题已经百度烂了

c++职工管理系统，我本来是能正常创建和读写文件的，运行了一次之后突然就不行了，能创建同名文件但是写不进去内容为什么，求好geigei解答，而且运行它会卡在最后一步，既不会崩溃也不会报错就一直卡着，百度了一天了阿西

#pragma once//头文件
#include 
#include "worker.h"
#include 
constexpr auto FileName = "empfile.txt";;
using namespace std;
class WorkerManager
{
public:
    WorkerManager();
    bool IsFileEmpty;
    int EmpNum;
    worker** Emparry;
    void SystemOut();
    void ShowMenu();
    void ShowEmp();
    void AddNum();
    void save();
    void init_Emp();
    void DelEmp();
    void ModEmp();
    int GetEmpNumber();
    int IsExist(int id);
    ~WorkerManager();
};
//WorkerManager源文件
#include "Workermanager.h"
#include "employee.h"
#include "boss.h"
#include "director.h"
void WorkerManager::ShowMenu()
{
    cout << "***********************************************" << endl;
    cout << "*********     欢迎使用职工管理系统   **********" << endl;
    cout << "*********          0.退出软件        **********" << endl;
    cout << "*********        1.增加职工信息      **********" << endl;
    cout << "*********        2.显示职工信息      **********" << endl;
    cout << "*********        3.删除职工信息      **********" << endl;
    cout << "*********        4.修改职工信息      **********" << endl;
    cout << "*********        5.查找职工信息      **********" << endl;
    cout << "*********        6.按照编号排序      **********" << endl;
    cout << "*********        7.清空所有文档      **********" << endl;
    cout << "***********************************************" << endl;
    cout << endl;
}
void WorkerManager::ModEmp()
{
    if (this->IsFileEmpty)
    {
        cout << "文件不存在或记录为空" << endl;
    }
    else
    {
        cout << "请输入要修改的员工编号" << endl;
        int id = 0;
        cin >> id;
        int ret = this->IsExist(id);
        if (ret != -1)
        {
            delete this->Emparry[ret];
            int newid = 0;
            string newname = "";
            int select = 0;
            cout << "查到：" << id << "号职工，请输入新职工号" << endl;
            cin >> newid;
            cout << "请输入姓名" << endl;
            cin >> newname;
            cout << "请选择该职工岗位" << endl;
            cout << "1.普通员工" << endl;
            cout << "2.老板" << endl;
            cout << "3.经理" << endl;
            cin >> select;
            worker* worker = NULL;
            switch (select)
            {
            case 1:
                worker = new employee(id, newname, select);
                break;
            case 2:
                worker = new boss(id, newname, select);
                break;
            case 3:
                worker = new director(id, newname, select);
                break;
            default:
                cout << "输入错误" << endl;
            }
            this->Emparry[ret] = worker;
            cout << "修改成功" << endl;
            this->save();
        }
        else
        {
            cout << "修改失败，查无此人" << endl;
        }
    }
}
void WorkerManager::DelEmp()
{
    if (this->IsFileEmpty)
    {
        cout << "文件不存在或记录为空" << endl;
    }
    else
    {
        cout << "请输入要删除的员工编号" << endl;
        int id;
        cin >> id;
        this->IsExist(id);
        int index = this->IsExist(id);
        if (index != -1)
        {
            for (int i = 0; i < this->EmpNum - 1; i++)
            {
                this->Emparry[i] = this->Emparry[i + 1];
            }
            this->EmpNum--;
            this->save();
            cout << "删除成功" << endl;
        }
        else
        {
            cout << "删除失败，未找到该员工" << endl;
        }
    }
    system("pause");
    system("cls");
}
int WorkerManager::IsExist(int id)
{
    int index = -1;
    for (int i = 0; i < this->EmpNum; i++)
    {
        if (this->Emparry[i]->identfy == id)
        {
            index = i;
            break;
        }
    }
    return index;
}
void WorkerManager::ShowEmp()
{
    if (this->IsFileEmpty)
    {
        cout << "文件不存在或记录为空" << endl;
    }
    else
    {
        for (int i = 0; i < EmpNum; i++)
        {
            this->Emparry[i]->ShowInfo();
        }
    }
    system("pause");
    system("cls"); 
}
void WorkerManager::init_Emp()
{
    ifstream ifs;
    ifs.open(FileName, ios::in);
    int id;
    string name;
    int did;
    int index = 0;
    while (ifs >> id && ifs >> name && ifs >> did)
    {
        worker* worker = NULL;
        if(did == 1)
        {
            worker = new employee(id, name, did);
        }
        else if (did == 2)
        {
            worker = new boss(id, name, did);            
        }
        else
        {
            worker = new director(id, name, did);
        }
        this->Emparry[index] = worker;
        index++;
    }
    ifs.close();
}
int WorkerManager::GetEmpNumber()
{
    ifstream ifs;
    ifs.open(FileName, ios::in);
    int id;
    string name;
    int did;
    int num = 0;
    while (ifs >> id && ifs >> name && ifs >> did)
    {
        num++;
    }
    ifs.close();
    return num;
}
WorkerManager::WorkerManager()
{
    this->Emparry = new worker * [this->EmpNum];
    init_Emp();
    ifstream ifs;
    ifs.open(FileName, ios::in);
    if (!ifs.is_open())
    {
        cout << "文件不存在" << endl;
        this->EmpNum = 0;
        this->Emparry = NULL;
        this->IsFileEmpty = true;
        ifs.close();
        return;
    }
    char ch;
    ifs >> ch;
    if (ifs.eof())
    {
        cout << "文件夹为空" << endl;
        this->EmpNum = 0;
        this->Emparry = NULL;
        this->IsFileEmpty = true;
        ifs.close();
        return;
    }
    int num = this->GetEmpNumber();
    cout << "职工人数为： " << num << endl;
    this->EmpNum = num;
    this->EmpNum = 0;
    this->Emparry = NULL;
}
void WorkerManager::save()
{
    ofstream ofs;
    ofs.open(FileName, ios::out);
    for (int i = 0; i < this->EmpNum; i++)
    {
        ofs << this->Emparry[i]->identfy << " "
            << this->Emparry[i]->name << " "
            << this->Emparry[i]->depidentfy << endl;
    }
    ofs.close();
}
void WorkerManager::AddNum()
{
    cout << "请增输入要增加的员工数量"<< endl;
    int addnum = 0;
    cin >> addnum;
    if (addnum > 0)
    {
        int newsize = this->EmpNum + addnum;
        worker** newspace = new worker * [newsize+4];
        if (this->Emparry != NULL)
        {
            for (int i = 0; i < this->EmpNum; i++)
            {
                newspace[i] = this->Emparry[i];
            }
        }
        for (int i = 0; i < addnum; i++)
        {
            int id;
            string name;
            int dselect;
            cout << "请输入第" << i + 1 << "个新员工编号" << endl;
            cin >> id;
            cout << "请输入第" << i + 1 << "个新员工姓名" << endl;
            cin >> name;
            cout << "请选择该职工岗位" << endl;
            cout << "1.普通员工" << endl;
            cout << "2.老板" << endl;
            cout << "3.经理" << endl;
            cin >> dselect;
            worker* worker = NULL;
            switch (dselect)
            {
            case 1:
                worker = new employee(id, name, 1);
                break;
            case 2:
                worker = new boss(id, name, 2);
                break;
            case 3:
                worker = new director(id, name, 3);
                break;
            default:
                cout << "输入错误" << endl;
                break;
                newspace[this->EmpNum + i] = worker;
            }
        }
        delete[]this->Emparry;
        this->Emparry = newspace;
        this->EmpNum = newsize;
        this->save();
        cout << "成功增加" << addnum << "名新员工" << endl;
    }
    else
    {
        cout << "输入有误，请重新输入" << endl;
    }
    system("pause");
    system("cls");
}
WorkerManager::~WorkerManager()
{
    if (this->Emparry != NULL)
    {
        delete[]this->Emparry;
        this->Emparry = NULL;
    }
}
void WorkerManager::SystemOut()
{
    cout << "欢迎下次使用" << endl;
    system("pause");
    exit(0);
}

218行这个if中，如果ifs.eof()为false，则IsFileEmpty不会被初始化，ifs打开的文件不会被关闭，一直在打开状态，后面再次打开写入就会出问题。