给出一个简单班级考勤管理系统C语言代码，和部署过程

以下是一个简单班级考勤管理系统的C语言代码示例，包括添加学生信息、添加考勤记录、查询学生信息和考勤记录等功能。

#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#define MAX_STUDENTS 50

struct student {
    char name[30];
    int id;
};

struct attendance {
    int id;
    char date[20];
    char status[10];
};

struct student students[MAX_STUDENTS];
struct attendance attendances[MAX_STUDENTS];
int num_students = 0;
int num_attendances = 0;

void add_student() {
    if (num_students >= MAX_STUDENTS) {
        printf("The maximum number of students has been reached!\n");
        return;
    }

    printf("Enter the name of the student: ");
    scanf("%s", students[num_students].name);
    printf("Enter the ID of the student: ");
    scanf("%d", &students[num_students].id);
    num_students++;
}

void add_attendance() {
    if (num_attendances >= MAX_STUDENTS) {
        printf("The maximum number of attendances has been reached!\n");
        return;
    }

    int id;
    char date[20], status[10];
    printf("Enter the ID of the student: ");
    scanf("%d", &id);
    printf("Enter the date of the attendance (yyyy-mm-dd): ");
    scanf("%s", date);
    printf("Enter the status of the attendance: ");
    scanf("%s", status);

    int found = 0;
    for (int i = 0; i < num_students; i++) {
        if (students[i].id == id) {
            found = 1;
            break;
        }
    }

    if (!found) {
        printf("No student found with ID %d!\n", id);
        return;
    }

    attendances[num_attendances].id = id;
    strcpy(attendances[num_attendances].date, date);
    strcpy(attendances[num_attendances].status, status);
    num_attendances++;
}

void print_student(int i) {
    printf("Name: %s, ID: %d\n", students[i].name, students[i].id);
}

void print_attendance(int i) {
    printf("ID: %d, Date: %s, Status: %s\n", attendances[i].id, attendances[i].date, attendances[i].status);
}

void list_students() {
    if (num_students == 0) {
        printf("No students found!\n");
        return;
    }

    printf("List of students:\n");
    for (int i = 0; i < num_students; i++) {
        print_student(i);
    }
}

void list_attendances() {
    if (num_attendances == 0) {
        printf("No attendances found!\n");
        return;
    }

    printf("List of attendances:\n");
    for (int i = 0; i < num_attendances; i++) {
        print_attendance(i);
    }
}

int main() {
    int choice;

    while (1) {
        printf("1. Add student\n");
        printf("2. Add attendance\n");
        printf("3. List students\n");
        printf("4. List attendances\n");
        printf("5. Exit\n");
        printf("Enter your choice: ");
        scanf("%d", &choice);

        switch(choice) {
            case 1:
                add_student();
                break;
            case 2:
                add_attendance();
                break;
            case 3:
                list_students();
                break;
            case 4:
                list_attendances();
                break;
            case 5:
                exit(0);
            default:
                printf("Invalid choice!\n");
        }
    }

    return 0;
}

部署过程：

1. 打开命令行终端，进入代码所在的文件夹。
2. 使用以下命令编译代码：`gcc -o attendance attendance.c`。
3. 运行程序：`./attendance`。
4. 根据程序提示，选择相应的功能进行操作。

注意：本代码仅作为示例，实际使用中可能需要根据具体需求进行修改和完善。