用VC实现c++管理系统,要求有工程师的信息添加、修改、删除、排序、查找、显示、保存,然后退出。工程师要有工号、姓名、性别、学历、年龄、工资、地址、电话。

以下是用VC实现c++管理系统的代码，包括工程师的信息添加、修改、删除、排序、查找、显示、保存和退出功能。其中工程师有工号、姓名、性别、学历、年龄、工资、地址、电话等信息。

#include <iostream>
#include <fstream>
#include <string>
#include <vector>
#include <algorithm>
using namespace std;

class Engineer {
public:
    string id; // 工号
    string name; // 姓名
    string gender; // 性别
    string education; // 学历
    int age; // 年龄
    double salary; // 工资
    string address; // 地址
    string phone; // 电话

    Engineer(string id, string name, string gender, string education, int age, double salary, string address, string phone) {
        this->id = id;
        this->name = name;
        this->gender = gender;
        this->education = education;
        this->age = age;
        this->salary = salary;
        this->address = address;
        this->phone = phone;
    }

    void display() {
        cout << "工号：" << id << endl;
        cout << "姓名：" << name << endl;
        cout << "性别：" << gender << endl;
        cout << "学历：" << education << endl;
        cout << "年龄：" << age << endl;
        cout << "工资：" << salary << endl;
        cout << "地址：" << address << endl;
        cout << "电话：" << phone << endl;
    }
};

vector<Engineer> engineers; // 存储所有工程师信息的vector

// 添加工程师信息
void addEngineer() {
    string id, name, gender, education, address, phone;
    int age;
    double salary;
    cout << "请输入工号：";
    cin >> id;
    cout << "请输入姓名：";
    cin >> name;
    cout << "请输入性别：";
    cin >> gender;
    cout << "请输入学历：";
    cin >> education;
    cout << "请输入年龄：";
    cin >> age;
    cout << "请输入工资：";
    cin >> salary;    cout << "请输入地址：";
    cin >> address;
    cout << "请输入电话：";
    cin >> phone;
    Engineer engineer(id, name, gender, education, age, salary, address, phone);
    engineers.push_back(engineer);
    cout << "添加成功！" << endl;
}

// 修改工程师信息
void modifyEngineer() {
    string id;
    cout << "请输入要修改的工程师的工号：";
    cin >> id;
    for (int i = 0; i < engineers.size(); i++) {
        if (engineers[i].id == id) {
            string name, gender, education, address, phone;
            int age;
            double salary;
            cout << "请输入新的姓名：";
            cin >> name;
            cout << "请输入新的性别：";
            cin >> gender;
            cout << "请输入新的学历：";
            cin >> education;
            cout << "请输入新的年龄：";
            cin >> age;
            cout << "请输入新的工资：";
            cin >> salary;
            cout << "请输入新的地址：";
            cin >> address;
            cout << "请输入新的电话：";
            cin >> phone;
            engineers[i].name = name;
            engineers[i].gender = gender;
            engineers[i].education = education;
            engineers[i].age = age;
            engineers[i].salary = salary;
            engineers[i].address = address;
            engineers[i].phone = phone;
            cout << "修改成功！" << endl;
            return;
        }
    }
    cout << "未找到该工程师！" << endl;
}

// 删除工程师信息
void deleteEngineer() {
    string id;
    cout << "请输入要删除的工程师的工号：";
    cin >> id;
    for (int i = 0; i < engineers.size(); i++) {
        if (engineers[i].id == id) {
            engineers.erase(engineers.begin() + i);
            cout << "删除成功！" << endl;
            return;
        }
    }
    cout << "未找到该工程师！" << endl;
}

// 按工号排序
bool cmpById(const Engineer& e1, const Engineer& e2) {
    return e1.id < e2.id;
}

// 按姓名排序
bool cmpByName(const Engineer& e1, const Engineer& e2) {
    return e1.name < e2.name;
}

// 按年龄排序
bool cmpByAge(const Engineer& e1, const Engineer& e2) {
    return e1.age < e2.age;
}

// 排序工程师信息
void sortEngineers() {
    int choice;
    cout << "请选择排序方式：" << endl;
    cout << "1.按工号排序" << endl;
    cout << "2.按姓名排序" << endl;
    cout << "3.按年龄排序" << endl;
    cin >> choice;
    switch (choice) {
    case 1:
        sort(engineers.begin(), engineers.end(), cmpById);
        cout << "按工号排序成功！" << endl;
        break;
    case 2:
        sort(engineers.begin(), engineers.end(), cmpByName);
        cout << "按姓名排序成功！" << endl;
        break;
    case 3:
        sort(engineers.begin(), engineers.end(), cmpByAge);
        cout << "按年龄排序成功！" << endl;
        break;
    default:
        cout << "无效的选择！" << endl;
        break;
    }
}

// 查找工程师信息
void searchEngineer() {
    string id;
    cout << "请输入要查找的工程师的工号：";
    cin >> id;
    for (int i = 0; i < engineers.size(); i++) {
        if (engineers[i].id == id) {
            engineers[i].display();
            return;
        }
    }
    cout << "未找到该工程师！" << endl;
}

// 显示所有工程师信息
void displayEngineers() {
    for (int i = 0; i < engineers.size(); i++) {
        engineers[i].display();
        cout << endl;
    }
}

// 保存工程师信息到文件
void saveEngineers() {
    ofstream fout("engineers.txt");
    for (int i = 0; i < engineers.size(); i++) {
        fout << engineers[i].id << " " << engineers[i].name << " " << engineers[i].gender << " " << engineers[i].education << " " << engineers[i].age << " " << engineers[i].salary << " " << engineers[i].address << " " << engineers[i].phone << endl;
    }
    fout.close();
    cout << "保存成功！" << endl;
}

// 从文件中读取工程师信息
void loadEngineers() {
    ifstream fin("engineers.txt");
    string id, name, gender, education, address, phone;
    int age;
    double salary;
    while (fin >> id >> name >> gender >> education >> age >> salary >> address >> phone) {
        Engineer engineer(id, name, gender, education, age, salary, address, phone);
        engineers.push_back(engineer);
    }
    fin.close();
    cout << "读取成功！" << endl;
}

int main() {
    loadEngineers(); // 从文件中读取工程师信息
    while (true) {
        int choice;
        cout << "请选择操作：" << endl;
        cout << "1.添加工程师信息" << endl;
        cout << "2.修改工程师信息" << endl;
        cout << "3.删除工程师信息" << endl;
        cout << "4.排序工程师信息" << endl;
        cout << "5.查找工程师信息" << endl;
        cout << "6.显示所有工程师信息" << endl;
        cout << "7.保存工程师信息到文件" << endl;
        cout << "8.退出" << endl;
        cin >> choice;
        switch (choice) {
        case 1:
            addEngineer();
            break;
        case 2:
            modifyEngineer();
            break;
        case 3:
            deleteEngineer();
            break;
        case 4:
            sortEngineers();
            break;
        case 5:
            searchEngineer();
            break;
        case 6:
            displayEngineers();
            break;
        case 7:
            saveEngineers();
            break;
        case 8:
            saveEngineers(); // 退出前保存工程师信息到文件
            cout << "谢谢使用！" << endl;
            return 0;
        default:
            cout << "无效的选择！" << endl;
            break;
        }
    }
    return 0;
}