#include <stdio.h>
#include <string.h>
#include <stdlib.h>
// 定义抽象接口
typedef struct interface_t
{
struct interface_t *(*clone)(void *obj);
void (*set)(void* obj, const char* name, int age);
void (*show)(void* obj);
char name[32];
int age;
}Interface_t;
typedef struct student_t
{
struct interface_t *(*clone)(void *obj);
void (*set)(void* obj, const char* str, int age);
void (*show)(void* obj);
char name[32];
int age;
}Student_t;
static void student_set(void* obj, const char* str, int age)
{
if(!obj || !str)
return ;
Student_t *s = (Student_t *)obj;
strcpy(s->name, str);
s->age = age;
}
static void student_show(void* obj)
{
Student_t *s = (Student_t *)obj;
printf("显示 学生信息: 姓名[%s] 年龄[%d]\n", s->name, s->age);
}
static struct interface_t* student_clone(void *obj)
{
if(!obj)
return NULL;
Interface_t *iobj = (Interface_t *)malloc(sizeof(Interface_t));
Student_t* s = (Student_t*)obj;
iobj->show = student_show;
iobj->set = student_set;
iobj->clone = student_clone;
strcpy(iobj->name, s->name);
iobj->age = s->age;
printf("调用clone()函数, clone Student\n");
return iobj;
}
Student_t* constructor_student(void)
{
Student_t* s = (Student_t*)malloc(sizeof(Student_t));
s->clone = student_clone;
s->set = student_set;
s->show = student_show;
return s;
}
int main(int argc, char *argv[])
{
printf("原始的学生信息: \n");
Student_t *s1 = constructor_student();
s1->set(s1, "SS", 23);
s1->show(s1);
printf("\n");
Interface_t* i1 = s1->clone(s1);
free(s1);
printf("调用clone(),拷贝后的信息: \n");
i1->show(i1);
printf("\n");
printf("重新修改信息: ");
i1->set(i1, "DD", 41);
i1->show(i1);
free(i1);
return 0;
}