c++软件工程师管理系统信息添加、修改、删除、排序、查找、显示、保存

以下是一个C++软件工程师管理系统的示例，包括信息添加、修改、删除、排序、查找、显示和保存功能。该系统使用文件进行数据的保存和修改。

#include <iostream>
#include <fstream>
#include <vector>
#include <algorithm>

using namespace std;

// 虚基类Staff
class Staff {
public:
    Staff(string name, int age, string gender, string id) : name(name), age(age), gender(gender), id(id) {}
    virtual void display() = 0; // 纯虚函数
    virtual string getType() = 0; // 纯虚函数
    string getName() { return name; }
    int getAge() { return age; }
    string getGender() { return gender; }
    string getId() { return id; }
protected:
    string name;
    int age;
    string gender;
    string id;
};

// 工程师类Engineer
class Engineer : public Staff {
public:
    Engineer(string name, int age, string gender, string id, string major) : Staff(name, age, gender, id), major(major) {}
    void display() {
        cout << "工程师：" << name << "，年龄：" << age << "，性别：" << gender << "，工号：" << id << "，专业：" << major << endl;
    }
    string getType() { return "Engineer"; }
private:
    string major;
};

// 领导类Leader
class Leader : public Staff {
public:
    Leader(string name, int age, string gender, string id, string department) : Staff(name, age, gender, id), department(department) {}
    void display() {
        cout << "领导：" << name << "，年龄：" << age << "，性别：" << gender << "，工号：" << id << "，部门：" << department << endl;
    }
    string getType() { return "Leader"; }
private:
    string department;
};

// 主任工程师类Chairman
class Chairman : public Staff {
public:
    Chairman(string name, int age, string gender, string id, string major, string department) : Staff(name, age, gender, id), major(major), department(department) {}
    void display() {
        cout << "主任工程师：" << name << "，年龄：" << age << "，性别：" << gender << "，工号：" << id << "，专业：" << major << "，部门：" << department << endl;
    }
    string getType() { return "Chairman"; }
private:
    string major;
    string department;
};

// 管理类Manager
class Manager {
public:
    Manager(string filename) : filename(filename) {
        ifstream fin(filename);
        if (!fin) {
            ofstream fout(filename);
            fout.close();
        } else {
            fin.close();
        }
    }
    void addStaff(Staff* staff) {
        staffs.push_back(staff);
    }
    void updateStaff(string id) {
        for (auto staff : staffs) {
            if (staff->getId() == id) {
                string name, gender;
                int age;
                cout << "请输入姓名：";
                cin >> name;
                cout << "请输入年龄：";
                cin >> age;
                cout << "请输入性别：";
                cin >> gender;
                staff->name = name;
                staff->age = age;
                staff->gender = gender;
                cout << "修改成功！" << endl;
                return;
            }
        }
        cout << "未找到该员工！" << endl;
    }
    void deleteStaff(string id) {
        for (auto it = staffs.begin(); it != staffs.end(); it++) {
            if ((*it)->getId() == id) {
                staffs.erase(it);
                cout << "删除成功！" << endl;
                return;
            }
        }
        cout << "未找到该员工！" << endl;
    }
    void sortStaffs() {
        sort(staffs.begin(), staffs.end(), [](Staff* a, Staff* b) { return a->getId() < b->getId(); });
        cout << "排序成功！" << endl;
    }
    void searchStaff(string id) {
        for (auto staff : staffs) {
            if (staff->getId() == id) {
                staff->display();
                return;
            }
        }
        cout << "未找到该员工！" << endl;
    }
    void displayAllStaffs() {
        for (auto staff : staffs) {
            staff->display();
        }
    }
    void saveToFile() {
        ofstream fout(filename);
        for (auto staff : staffs) {
            fout << staff->getType() << " " << staff->getName() << " " << staff->getAge() << " " << staff->getGender() << " " << staff->getId();
            if (staff->getType() == "Engineer") {
                Engineer* engineer = dynamic_cast<Engineer*>(staff);
                fout << " " << engineer->getType();
            } else if (staff->getType() == "Leader") {
                Leader* leader = dynamic_cast<Leader*>(staff);
                fout << " " << leader->getType();
            } else if (staff->getType() == "Chairman") {
                Chairman* chairman = dynamic_cast<Chairman*>(staff);
                fout << " " << chairman->getType() << " " << chairman->major << " " << chairman->department;
            }
            fout << endl;
        }
        fout.close();
        cout << "保存成功！" << endl;
    }
private:
    string filename;
    vector<Staff*> staffs;
};

// 主函数
int main() {
    Manager manager("staffs.txt");
    while (true) {
        cout << "请选择操作：1.添加员工 2.修改员工 3.删除员工 4.排序员工 5.查找员工 6.显示所有员工 7.保存员工信息 0.退出" << endl;
        int choice;
        cin >> choice;
        if (choice == 0) {
            break;
        } else if (choice == 1) {
            cout << "请选择员工类型：1.工程师 2.领导 3.主任工程师" << endl;
            int type;
            cin >> type;
            string name, gender, id;
            int age;
            cout << "请输入姓名：";
            cin >> name;
            cout << "请输入年龄：";
            cin >> age;
            cout << "请输入性别：";
            cin >> gender;
            cout << "请输入工号：";
            cin >> id;
            if (type == 1) {
                string major;
                cout << "请输入专业：";
                cin >> major;
                Engineer* engineer = new Engineer(name, age, gender, id, major);
                manager.addStaff(engineer);
                cout << "添加成功！" << endl;
            } else if (type == 2) {
                string department;
                cout << "请输入部门：";
                cin >> department;
                Leader* leader = new Leader(name, age, gender, id, department);
                manager.addStaff(leader);
                cout << "添加成功！" << endl;
            } else if (type == 3) {
                string major, department;
                cout << "请输入专业：";
                cin >> major;
                cout << "请输入部门：";
                cin >> department;
                Chairman* chairman = new Chairman(name, age, gender, id, major, department);
                manager.addStaff(chairman);
                cout << "添加成功！" << endl;
            } else {
                cout << "输入错误！" << endl;
            }
        } else if (choice == 2) {
            string id;
            cout << "请输入要修改的员工工号：";
            cin >> id;
            manager.updateStaff(id);
        } else if (choice == 3) {
            string id;
            cout << "请输入要删除的员工工号：";
            cin >> id;
            manager.deleteStaff(id);
        } else if (choice == 4) {
            manager.sortStaffs();
        } else if (choice == 5) {
            string id;
            cout << "请输入要查找的员工工号：";
            cin >> id;
            manager.searchStaff(id);
        } else if (choice == 6) {
            manager.displayAllStaffs();
        } else if (choice == 7) {
            manager.saveToFile();
        } else {
            cout << "输入错误！" << endl;
        }
    }
    return 0;
}