C++职工工资管理 基本要求：定义职工（employee)类，其中至少包括姓名、性别、工号、电话、所在科室和 工资。功能要求：1、设计菜单实现功能选择；2、输入功能：输入职工信息，并保存到文件中；查询功能：1）能够根据工号精确查询职工信息；2）能够根据姓名

来模糊查询职工信息，并将查询结果输出；3、能够统计并输出所有职工的工资总和、平均工资和最高工资者的信息；4、能够按照工资从高到低排序并输出职工信息。

以下是一个实现职工工资管理系统的示例代码：

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

// 定义职工类
class Employee {
public:
    string name;    // 姓名
    string gender;  // 性别
    string id;      // 工号
    string phone;   // 电话
    string dept;    // 所在科室
    double salary;  // 工资
};

// 定义职工管理类
class EmployeeManager {
public:
    vector<Employee> employees;    // 所有职工信息

    // 从文件中读取职工信息
    void loadFromFile(string filename) {
        ifstream ifs(filename);
        if (!ifs) {
            cout << "Error: cannot open file " << filename << endl;
            return;
        }
        Employee emp;
        while (ifs >> emp.name >> emp.gender >> emp.id >> emp.phone >> emp.dept >> emp.salary) {
            employees.push_back(emp);
        }
        ifs.close();
        cout << "Load " << employees.size() << " employees from file " << filename << endl;
    }

    // 将职工信息保存到文件中
    void saveToFile(string filename) {
        ofstream ofs(filename);
        if (!ofs) {
            cout << "Error: cannot open file " << filename << endl;
            return;
        }
        for (auto &emp : employees) {
            ofs << emp.name << ' ' << emp.gender << ' ' << emp.id << ' ' << emp.phone << ' ' << emp.dept << ' ' << emp.salary << endl;
        }
        ofs.close();
        cout << "Save " << employees.size() << " employees to file " << filename << endl;
    }

    // 添加职工信息
    void addEmployee() {
        Employee emp;
        cout << "Enter employee's name: ";
        getline(cin, emp.name);
        cout << "Enter employee's gender (male or female): ";
        getline(cin, emp.gender);
        cout << "Enter employee's id: ";
        getline(cin, emp.id);
        cout << "Enter employee's phone: ";
        getline(cin, emp.phone);
        cout << "Enter employee's department: ";
        getline(cin, emp.dept);
        cout << "Enter employee's salary: ";
        cin >> emp.salary;
        cin.ignore();   // 忽略换行符
        employees.push_back(emp);
        cout << "Add employee successfully!" << endl;
    }

    // 根据工号查询职工信息
    void searchById() {
        string id;
        cout << "Enter employee's id to search: ";
        getline(cin, id);
        for (auto &emp : employees) {
            if (emp.id == id) {
                cout << "Name: " << emp.name << endl;
                cout << "Gender: " << emp.gender << endl;
                cout << "Id: " << emp.id << endl;
                cout << "Phone: " << emp.phone << endl;
                cout << "Department: " << emp.dept << endl;
                cout << "Salary: " << emp.salary << endl;
                return;
            }
        }
        cout << "Cannot find employee with id " << id << endl;
    }

    // 根据姓名模糊查询职工信息
    void searchByName() {
        string name;
        cout << "Enter employee's name to search: ";
        getline(cin, name);
        vector<Employee> result;
        for (auto &emp : employees) {
            if (emp.name.find(name) != string::npos) {
                result.push_back(emp);
            }
        }
        if (result.empty()) {
            cout << "Cannot find employee with name " << name << endl;
        } else {
            for (auto &emp : result) {
                cout << "Name: " << emp.name << endl;
                cout << "Gender: " << emp.gender << endl;
                cout << "Id: " << emp.id << endl;
                cout << "Phone: " << emp.phone << endl;
                cout << "Department: " << emp.dept << endl;
                cout << "Salary: " << emp.salary << endl;
            }
        }
    }

    // 统计职工工资总和、平均工资和最高工资者的信息
    void getStatistics() {
        double sum = 0, maxSalary = 0;
        for (auto &emp : employees) {
            sum += emp.salary;
            maxSalary = max(maxSalary, emp.salary);
        }
        double avgSalary = employees.empty() ? 0 : sum / employees.size();
        cout << "Total salary: " << sum << endl;
        cout << "Average salary: " << avgSalary << endl;
        cout << "Employee(s) with highest salary: " << endl;
        for (auto &emp : employees) {
            if (emp.salary == maxSalary) {
                cout << "Name: " << emp.name << endl;
                cout << "Gender: " << emp.gender << endl;
                cout << "Id: " << emp.id << endl;
                cout << "Phone: " << emp.phone << endl;
                cout << "Department: " << emp.dept << endl;
                cout << "Salary: " << emp.salary << endl;
            }
        }
    }

    // 按照工资从高到低排序并输出职工信息
    void sortBySalary() {
        sort(employees.begin(), employees.end(), [](const Employee &a, const Employee &b) {
            return a.salary > b.salary;
        });
        for (auto &emp : employees) {
            cout << "Name: " << emp.name << endl;
            cout << "Gender: " << emp.gender << endl;
            cout << "Id: " << emp.id << endl;
            cout << "Phone: " << emp.phone << endl;
            cout << "Department: " << emp.dept << endl;
            cout << "Salary: " << emp.salary << endl;
        }
    }
};

int main() {
    EmployeeManager manager;
    manager.loadFromFile("employees.txt");
    while (true) {
        cout << "Menu:" << endl;
        cout << "1. Add employee" << endl;
        cout << "2. Search by id" << endl;
        cout << "3. Search by name" << endl;
        cout << "4. Get statistics" << endl;
        cout << "5. Sort by salary" << endl;
        cout << "6. Save to file" << endl;
        cout << "0. Exit" << endl;
        int choice;
        cout << "Enter your choice: ";
        cin >> choice;
        cin.ignore();   // 忽略换行符
        switch (choice) {
        case 0:
            return 0;
        case 1:
            manager.addEmployee();
            break;
        case 2:
            manager.searchById();
            break;
        case 3:
            manager.searchByName();
            break;
        case 4:
            manager.getStatistics();
            break;
        case 5:
            manager.sortBySalary();
            break;
        case 6:
            manager.saveToFile("employees.txt");
            break;
        default:
            cout << "Invalid choice, please try again!" << endl;
        }
    }
    return 0;
}

这个程序使用了类和文件读写等 C++ 特性，实现了简单的职工工资管理系统。