用C++写一个学生考勤管理系统课程设计

好的，下面是一个简单的学生考勤管理系统的设计和实现，使用C++编写：

#include<iostream>
#include<cstdio>
#include<cstring>
#include<cstdlib>
#include<algorithm>
#include<conio.h>
#define MAX 1000

using namespace std;

struct Student {
    char name[20];
    int id;
    int attendence_num;
    int late_num;
    int leave_num;
    int truant_num;
};

Student stu[MAX];
int num = 0;

void add_student() {
    cout << "请输入学生姓名：";
    cin >> stu[num].name;
    cout << "请输入学生学号：";
    cin >> stu[num].id;
    stu[num].attendence_num = 0;
    stu[num].late_num = 0;
    stu[num].leave_num = 0;
    stu[num].truant_num = 0;
    num++;
    cout << "添加成功！" << endl;
}

void show_student() {
    if (num == 0) {
        cout << "无学生信息！" << endl;
        return;
    }
    cout << "学号\t姓名\t出勤次数\t迟到次数\t请假次数\t旷课次数" << endl;
    for (int i = 0; i < num; i++) {
        cout << stu[i].id << "\t" << stu[i].name << "\t" << stu[i].attendence_num << "\t\t"
            << stu[i].late_num << "\t\t" << stu[i].leave_num << "\t\t" << stu[i].truant_num << endl;
    }
}

void modify_attendence() {
    if (num == 0) {
        cout << "无学生信息！" << endl;
        return;
    }
    int id;
    cout << "请输入学生学号：";
    cin >> id;
    for (int i = 0; i < num; i++) {
        if (stu[i].id == id) {
            cout << "请选择操作：1.出勤 2.迟到 3.请假 4.旷课" << endl;
            int option;
            cin >> option;
            switch (option) {
            case 1:
                stu[i].attendence_num++;
                break;
            case 2:
                stu[i].late_num++;
                break;
            case 3:
                stu[i].leave_num++;
                break;
            case 4:
                stu[i].truant_num++;
                break;
            default:
                cout << "无效操作！" << endl;
                break;
            }
            cout << "修改成功！" << endl;
            return;
        }
    }
    cout << "查无此人！" << endl;
}

void search_student() {
    if (num == 0) {
        cout << "无学生信息！" << endl;
        return;
    }
    int id;
    cout << "请输入学生学号：";
    cin >> id;
    for (int i = 0; i < num; i++) {
        if (stu[i].id == id) {
            cout << "学号\t姓名\t出勤次数\t迟到次数\t请假次数\t旷课次数" << endl;
            cout << stu[i].id << "\t" << stu[i].name << "\t" << stu[i].attendence_num << "\t\t"
                << stu[i].late_num << "\t\t" << stu[i].leave_num << "\t\t" << stu[i].truant_num << endl;
            return;
        }
    }
    cout << "查无此人！" << endl;
}

int main() {
    int option;
    while (1) {
        cout << "请选择操作：1.添加学生信息 2.显示学生信息 3.修改考勤信息 4.查询学生信息 5.退出程序" << endl;
        cin >> option;
        switch (option) {
        case 1:
            add_student();
            break;
        case 2:
            show_student();
            break;
        case 3:
            modify_attendence();
            break;
        case 4:
            search_student();
            break;
        case 5:
            cout << "程序已退出！" << endl;
            return 0;
        default:
            cout << "无效操作！" << endl;
            break;
        }
        cout << "按任意键继续..." << endl;
        getch();
        system("cls");
    }
    return 0;
}

本系统实现了以下功能：

1. 添加学生信息
2. 显示学生信息
3. 修改学生考勤信息
4. 查询学生信息

可以根据需要进行扩展和改进。