c++编码。某公司需要存储雇员的编号、姓名、性别、所在部门，级别，并进行工资的计算。其中的雇员分为经理、技术人员。月薪计算方法如下:经理拿固定目薪;技术人员按小时领取月薪。功能需求: (1)设计一程序能够对公司人员进行管理，应用到继承、抽象类、虚函数、虚基类、多态和文件的输入/输出等内容。

以下是一份基本的实现代码，实现了上述功能需求：

#include <iostream>
#include <fstream>
#include <vector>
#include <string>

using namespace std;

// 雇员类
class Employee {
protected:
    int id;
    string name;
    char gender;
    string department;
    int level;
public:
    Employee() {}
    Employee(int i, string n, char g, string d, int l) : id(i), name(n), gender(g), department(d), level(l) {}
    virtual void printInfo() {}
    virtual double getSalary() { return 0; }
};

// 经理类
class Manager : public virtual Employee {
protected:
    double salary;
public:
    Manager() {}
    Manager(int i, string n, char g, string d, int l, double s) : Employee(i, n, g, d, l), salary(s) {}
    void printInfo() {
        cout << "经理信息：" << endl;
        cout << "编号：" << id << endl;
        cout << "姓名：" << name << endl;
        cout << "性别：" << gender << endl;
        cout << "部门：" << department << endl;
        cout << "级别：" << level << endl;
        cout << "工资：" << salary << endl;
    }
    double getSalary() { return salary; }
};

// 技术人员类
class Technician : public virtual Employee {
protected:
    double hourlyPay;
    int hoursWorked;
public:
    Technician() {}
    Technician(int i, string n, char g, string d, int l, double h, int hw) : Employee(i, n, g, d, l), hourlyPay(h), hoursWorked(hw) {}
    void printInfo() {
        cout << "技术人员信息：" << endl;
        cout << "编号：" << id << endl;
        cout << "姓名：" << name << endl;
        cout << "性别：" << gender << endl;
        cout << "部门：" << department << endl;
        cout << "级别：" << level << endl;
        cout << "工资：" << getSalary() << endl;
    }
    double getSalary() { return hourlyPay * hoursWorked; }
};

// 经理兼技术人员类
class ManagerTechnician : public Manager, public Technician {
public:
    ManagerTechnician() {}
    ManagerTechnician(int i, string n, char g, string d, int l, double s, double h, int hw) : Employee(i, n, g, d, l), Manager(i, n, g, d, l, s), Technician(i, n, g, d, l, h, hw) {}
    void printInfo() {
        cout << "经理兼技术人员信息：" << endl;
        cout << "编号：" << id << endl;
        cout << "姓名：" << name << endl;
        cout << "性别：" << gender << endl;
        cout << "部门：" << department << endl;
        cout << "级别：" << level << endl;
        cout << "工资：" << getSalary() << endl;
    }
    double getSalary() { return Manager::getSalary() + Technician::getSalary(); }
};

// 公司类
class Company {
private:
    vector<Employee*> employees;
public:
    void addEmployee(Employee* e) {
        employees.push_back(e);
    }
    void printAllInfo() {
        for (auto e : employees) {
            e->printInfo();
            cout << endl;
        }
    }
    void saveToFile(string filename) {
        ofstream file(filename);
        for (auto e : employees) {
            file << e->getSalary() << "," << e->id << "," << e->name << "," << e->gender << "," << e->department << "," << e->level << endl;
        }
        file.close();
    }
    void loadFromFile(string filename) {
        ifstream file(filename);
        if (!file.is_open()) {
            cout << "文件打开失败！" << endl;
            return;
        }
        string line;
        while (getline(file, line)) {
            double salary;
            int id, level;
            string name, department;
            char gender;
            sscanf(line.c_str(), "%lf,%d,%[^,],%c,%[^,],%d", &salary, &id, &name[0], &gender, &department[0], &level);
            if (level == 0) {
                Manager* m = new Manager(id, name, gender, department, level, salary);
                addEmployee(m);
            }
            else if (level == 1) {
                Technician* t = new Technician(id, name, gender, department, level, salary, 0);
                addEmployee(t);
            }
            else {
                double h;
                int hw;
                sscanf(line.c_str(), "%lf,%d,%[^,],%c,%[^,],%d,%lf,%d", &salary, &id, &name[0], &gender, &department[0], &level, &h, &hw);
                ManagerTechnician* mt = new ManagerTechnician(id, name, gender, department, level, salary, h, hw);
                addEmployee(mt);
            }
        }
        file.close();
    }
};

int main() {
    Company c;
    Employee* e1 = new Manager(1001, "张三", 'M', "市场部", 0, 8000);
    Employee* e2 = new Technician(1002, "李四", 'F', "技术部", 1, 100, 120);
    Employee* e3 = new ManagerTechnician(1003, "王五", 'M', "生产部", 2, 10000, 120, 200);
    c.addEmployee(e1);
    c.addEmployee(e2);
    c.addEmployee(e3);
    c.printAllInfo();
    c.saveToFile("employees.txt");
    c.loadFromFile("employees.txt");
    c.printAllInfo();
    return 0;
}

这个程序定义了一个`Employee`雇员类，以及它的两个子类：`Manager`经理类和`Technician`技术人员类。其中，经理类有一个固定的月薪，技术人员类按小时领取月薪。为了实现经理兼技术人员这种情况，定义了`ManagerTechnician`类，继承了经理类和技术人员类。

程序还定义了一个`Company`公司类，负责管理所有的雇员。它提供了添加雇员、打印所有雇员信息、将雇员信息保存到文件、从文件中加载雇员信息等功能。

在`main`函数中，首先创建了三个雇员对象，并添加到公司中。然后打印所有雇员信息，并将雇员信息保存到文件。最后从文件中加载雇员信息，并再次打印所有雇员信息，以验证文件读写功能是否正常。