在C语言中，结构体中的可变数组成员

#include
#include
#include
//structure of type employee and must contain at least one more named member
in addition to the flexible array member.
struct employee
{
   int emp_id;
   int name_len;
   int emp_size; //‘emp_size’ variable is used to store the size of flexible
   character array emp_name[].
   char emp_name[]; //Flexible array member emp_name[] should be the last member of class.
};
struct employee *createEmployee(struct employee *e, int id, char a[])
{
   e = (struct employee *)malloc( sizeof(*e) + sizeof(char) * strlen(a)); //memory allocation
   e->emp_id = id;
   e->name_len = strlen(a);
   //Assigning size according to size of emp_name which is a copy of user provided
   array a[].
   strcpy(e->emp_name, a);
   return e;
}
void printEmployee(struct employee *e) //print the details of the employee.
{
   printf("Employee_id : %d</p><p>" "Employee Name : %s</p><p>" "Name Length: %d</p>
                    <div class="aritcle_card">
                        <a class="aritcle_card_img" href="/xiazai/code/11113">
                            <img src="https://img.php.cn/upload/webcode/000/000/001/176500620968446.jpg" alt="云网OA">
                        </a>
                        <div class="aritcle_card_info">
                            <a href="/xiazai/code/11113">云网OA</a>
                            <p>采用JSP开发的办公自动化产品、基于B/S结构，运行环境：JDK v1.5、Tomcat v5.5、MySQL v4.1，三者均为以上版本其他相关内容：可视化流程设计： 流程支持串签、会签和分支流程，可以设置流程节点的修改、删除权限，并可指定流程中各个用户在表单中可以填写的域。智能表单所见即所得设计： 智能设计，自动在数据库中生成表格，方便优化程序 公共交流： 集论坛、博客、聊天室于一体文件柜：C</p>
                            <div class="">
                                <img src="/static/images/card_xiazai.png" alt="云网OA">
                                <span>0</span>
                            </div>
                        </div>
                        <a href="/xiazai/code/11113" class="aritcle_card_btn">
                            <span>查看详情</span>
                            <img src="/static/images/cardxiayige-3.png" alt="云网OA">
                        </a>
                    </div>
                <p><span>立即学习</span>“<a href="https://pan.quark.cn/s/3851895a4c84" style="text-decoration: underline !important; color: blue; font-weight: bolder;" rel="nofollow" target="_blank">C语言免费学习笔记（深入）</a>”；</p><p></p><p>", e->emp_id, e->emp_name, e->name_len);
}
int main()
{
   struct employee *e1 = createEmployee(e1, 26, "Ram");
   struct employee *e2 = createEmployee(e2, 53, "Madhu");
   printEmployee(e1);
   printEmployee(e2);
   printf("Size of structure Employee: %lu</p><p>",
   sizeof(struct employee));
   return 0;
}

Employee_id : 26
Employee Name : Ram
Name Length: 3
Employee_id : 53
Employee Name : Madhu
Name Length: 5
Size of structure Employee: 12