宿舍管理系统c++简易版

以下是一个简单的宿舍管理系统的C++代码示例，它可以实现添加、删除、修改和查询学生信息的功能：

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

using namespace std;

// 定义学生结构体
struct Student {
    string name;
    string id;
    string room;
};

// 定义全局变量
vector<Student> students;

// 读取学生信息文件
void readStudents() {
    ifstream fin("students.txt");
    if (!fin) {
        cout << "无法打开文件！" << endl;
        return;
    }
    while (!fin.eof()) {
        Student student;
        fin >> student.name >> student.id >> student.room;
        students.push_back(student);
    }
    fin.close();
}

// 保存学生信息到文件
void saveStudents() {
    ofstream fout("students.txt");
    if (!fout) {
        cout << "无法打开文件！" << endl;
        return;
    }
    for (int i = 0; i < students.size(); i++) {
        fout << students[i].name << " " << students[i].id << " " << students[i].room << endl;
    }
    fout.close();
}

// 添加学生信息
void addStudent() {
    Student student;
    cout << "请输入学生姓名：";
    cin >> student.name;
    cout << "请输入学生学号：";    cin >> student.id;
    cout << "请输入学生宿舍号：";
    cin >> student.room;
    students.push_back(student);
    saveStudents();
    cout << "添加成功！" << endl;
}

// 删除学生信息
void deleteStudent() {
    string id;
    cout << "请输入要删除的学生学号：";
    cin >> id;
    for (int i = 0; i < students.size(); i++) {
        if (students[i].id == id) {
            students.erase(students.begin() + i);
            saveStudents();
            cout << "删除成功！" << endl;
            return;
        }
    }
    cout << "未找到该学生！" << endl;
}

// 修改学生信息
void modifyStudent() {
    string id;
    cout << "请输入要修改的学生学号：";
    cin >> id;
    for (int i = 0; i < students.size(); i++) {
        if (students[i].id == id) {
            cout << "请输入学生姓名：";
            cin >> students[i].name;
            cout << "请输入学生宿舍号：";
            cin >> students[i].room;
            saveStudents();
            cout << "修改成功！" << endl;
            return;
        }
    }
    cout << "未找到该学生！" << endl;
}

// 查询学生信息
void queryStudent() {
    string id;
    cout << "请输入要查询的学生学号：";
    cin >> id;
    for (int i = 0; i < students.size(); i++) {
        if (students[i].id == id) {
            cout << "姓名：" << students[i].name << endl;
            cout << "学号：" << students[i].id << endl;
            cout << "宿舍号：" << students[i].room << endl;
            return;
        }
    }
    cout << "未找到该学生！" << endl;
}

// 显示菜单
void showMenu() {
    cout << "======================" << endl;
    cout << "宿舍管理系统" << endl;
    cout << "1. 添加学生信息" << endl;
    cout << "2. 删除学生信息" << endl;
    cout << "3. 修改学生信息" << endl;
    cout << "4. 查询学生信息" << endl;
    cout << "0. 退出系统" << endl;
    cout << "======================" << endl;
}

int main() {
    readStudents();
    while (true) {
        showMenu();
        int choice;
        cout << "请输入操作编号：";
        cin >> choice;
        switch (choice) {
            case 1:
                addStudent();
                break;
            case 2:
                deleteStudent();
                break;
            case 3:
                modifyStudent();
                break;
            case 4:
                queryStudent();
                break;
            case 0:
                cout << "谢谢使用！" << endl;
                return 0;
            default:
                cout << "输入有误，请重新输入！" << endl;
                break;
        }
    }
    return 0;
}