学生学籍管理系统c++

学生学籍管理系统是一个比较典型的管理信息系统，它可以帮助学校或者教育机构管理学生的基本信息、课程信息、成绩信息等。下面是一个简单的学生学籍管理系统的c++代码示例：

#include <iostream>
#include <iomanip>
#include <string>
using namespace std;

const int MAX_SIZE = 100; // 最大学生数
const int NAME_LEN = 20; // 学生姓名最大长度

struct Student {
    int id; // 学号
    char name[NAME_LEN + 1]; // 姓名
    int age; // 年龄
    char gender; // 性别
    float scores[3]; // 三门课程的分数
    float totalScore; // 总分
    float averageScore; // 平均分
};

void addStudent(Student students[], int& size);
void deleteStudent(Student students[], int& size);
void updateStudent(Student students[], int& size);
void queryStudent(Student students[], int size);
void sortStudent(Student students[], int size);
void printStudent(Student student);

int main() {
    Student students[MAX_SIZE]; // 学生数组
    int size = 0; // 学生数量

    int choice;
    while (true) {
        // 显示菜单
        cout << "====== 学生学籍管理系统 ======" << endl;
        cout << "1. 添加学生" << endl;
        cout << "2. 删除学生" << endl;
        cout << "3. 修改学生信息" << endl;
        cout << "4. 查询学生信息" << endl;
        cout << "5. 排序" << endl;
        cout << "0. 退出" << endl;
        cout << "请选择操作：";
        cin >> choice;

        switch (choice) {
            case 1:
                addStudent(students, size);
                break;
            case 2:
                deleteStudent(students, size);
                break;
            case 3:
                updateStudent(students, size);
                break;
            case 4:
                queryStudent(students, size);
                break;
            case 5:
                sortStudent(students, size);
                break;
            case 0:
                return 0; // 退出程序
            default:
                cout << "无效的选择，请重新输入！" << endl;
                break;
        }
    }

    return 0;
}

/**
 * 添加学生
 */
void addStudent(Student students[], int& size) {
    if (size >= MAX_SIZE) {
        cout << "学生数量已达到上限，无法继续添加！" << endl;
        return;
    }

    Student student;
    cout << "请输入学号：";
    cin >> student.id;

    // 检查学号是否已存在
    for (int i = 0; i < size; i++) {
        if (students[i].id == student.id) {
            cout << "学号已存在，请重新输入！" << endl;
            return;
        }
    }

    cout << "请输入姓名：";
    cin >> student.name;

    cout << "请输入年龄：";
    cin >> student.age;

    cout << "请输入性别（M/F）：";
    cin >> student.gender;

    cout << "请输入三门课程的分数：" << endl;
    for (int i = 0; i < 3; i++) {
        cout << "第" << i + 1 << "门课程：";
        cin >> student.scores[i];
    }

    // 计算总分和平均分
    student.totalScore = student.scores[0] + student.scores[1] + student.scores[2];
    student.averageScore = student.totalScore / 3;

    students[size++] = student; // 添加学生
    cout << "添加成功！" << endl;
}

/**
 * 删除学生
 */
void deleteStudent(Student students[], int& size) {
    int id;
    cout << "请输入要删除的学生的学号：";
    cin >> id;

    for (int i = 0; i < size; i++) {
        if (students[i].id == id) {
            // 删除学生
            for (int j = i; j < size - 1; j++) {
                students[j] = students[j + 1];
            }
            size--;
            cout << "删除成功！" << endl;
            return;
        }
    }

    cout << "未找到学号为" << id << "的学生！" << endl;
}

/**
 * 修改学生信息
 */
void updateStudent(Student students[], int& size) {
    int id;
    cout << "请输入要修改的学生的学号：";
    cin >> id;

    for (int i = 0; i < size; i++) {
        if (students[i].id == id) {
            // 修改学生信息
            cout << "请输入新的姓名：";
            cin >> students[i].name;

            cout << "请输入新的年龄：";
            cin >> students[i].age;

            cout << "请输入新的性别（M/F）：";
            cin >> students[i].gender;

            cout << "请输入三门课程的新分数：" << endl;
            for (int j = 0; j < 3; j++) {
                cout << "第" << j + 1 << "门课程：";
                cin >> students[i].scores[j];
            }

            // 重新计算总分和平均分
            students[i].totalScore = students[i].scores[0] + students[i].scores[1] + students[i].scores[2];
            students[i].averageScore = students[i].totalScore / 3;

            cout << "修改成功！" << endl;
            return;
        }
    }

    cout << "未找到学号为" << id << "的学生！" << endl;
}

/**
 * 查询学生信息
 */
void queryStudent(Student students[], int size) {
    int id;
    cout << "请输入要查询的学生的学号：";
    cin >> id;

    for (int i = 0; i < size; i++) {
        if (students[i].id == id) {
            printStudent(students[i]);
            return;
        }
    }

    cout << "未找到学号为" << id << "的学生！" << endl;
}

/**
 * 排序
 */
void sortStudent(Student students[], int size) {
    // 按照总分从高到低排序
    for (int i = 0; i < size - 1; i++) {
        for (int j = 0; j < size - i - 1; j++) {
            if (students[j].totalScore < students[j + 1].totalScore) {
                Student temp = students[j];
                students[j] = students[j + 1];
                students[j + 1] = temp;
            }
        }
    }

    // 显示排序结果
    cout << "学号\t姓名\t年龄\t性别\t总分\t平均分" << endl;
    for (int i = 0; i < size; i++) {
        printStudent(students[i]);
    }
}

/**
 * 打印学生信息
 */
void printStudent(Student student) {
    cout << student.id << "\t" << student.name << "\t" << student.age << "\t" << student.gender << "\t"
         << fixed << setprecision(2) << student.totalScore << "\t" << student.averageScore << endl;
}

此代码仅作参考，实际上学生学籍管理系统的功能还可以更加丰富，例如支持批量导入、导出、打印等操作。此外，还需要考虑数据安全和数据完整性等问题。