写一个餐厅管理系统，包括管理店员的c语言代码

好的，以下是一个基于C语言的简单餐厅管理系统，包括管理店员的代码：

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

#define MAX_EMPLOYEES 100

typedef struct {
    char name[20];
    char position[20];
    float salary;
} Employee;

typedef struct {
    Employee employees[MAX_EMPLOYEES];
    int num_employees;
} StaffManagement;

void add_employee(StaffManagement *staff_management, Employee employee) {
    if (staff_management->num_employees >= MAX_EMPLOYEES) {
        printf("员工人数已达上限！\n");
        return;
    }
    staff_management->employees[staff_management->num_employees++] = employee;
    printf("员工添加成功！\n");
}

void remove_employee(StaffManagement *staff_management, char *employee_name) {
    int i;
    for (i = 0; i < staff_management->num_employees; i++) {
        if (strcmp(staff_management->employees[i].name, employee_name) == 0) {
            int j;
            for (j = i; j < staff_management->num_employees - 1; j++) {
                staff_management->employees[j] = staff_management->employees[j+1];
            }
            staff_management->num_employees--;
            printf("员工删除成功！\n");
            return;
        }
    }
    printf("员工不存在！\n");
}

void update_employee(StaffManagement *staff_management, char *employee_name, char *new_position, float new_salary) {
    int i;
    for (i = 0; i < staff_management->num_employees; i++) {
        if (strcmp(staff_management->employees[i].name, employee_name) == 0) {
            strcpy(staff_management->employees[i].position, new_position);
            staff_management->employees[i].salary = new_salary;
            printf("员工信息修改成功！\n");
            return;
        }
    }
    printf("员工不存在！\n");
}

void get_all_employees(StaffManagement staff_management) {
    int i;
    for (i = 0; i < staff_management.num_employees; i++) {
        printf("员工姓名：%s，职位：%s，薪资：%.2f\n", staff_management.employees[i].name, staff_management.employees[i].position, staff_management.employees[i].salary);
    }
}

int main() {
    StaffManagement staff_management = { .num_employees = 0 };

    // 添加员工
    add_employee(&staff_management, (Employee){ "张三", "服务员", 3000 });
    add_employee(&staff_management, (Employee){ "李四", "厨师", 5000 });
    add_employee(&staff_management, (Employee){ "王五", "经理", 8000 });

    // 获取所有员工信息
    get_all_employees(staff_management);

    // 修改员工信息
    update_employee(&staff_management, "张三", "主管", 4000);
    
    // 删除员工
    remove_employee(&staff_management, "王五");

    // 再次获取所有员工信息
    get_all_employees(staff_management);

    return 0;
}

以上代码实现了一个员工管理功能，包括添加、删除、修改、获取所有员工信息等操作。您可以根据实际需要进行扩展。