#include
#include
#include
struct movie_type {
int id;
char name[30];
}mts[20];
struct movie {
int id;
char name[100];
char director[100];
char language[100];
int year;
int score;
struct movie* next;
int type_id;
}movie_sort[20];
int if_set_type = 0;
int if_initial_movie_list = 0;
int type_num;
struct movie* head;
int check()
{
if (!if_set_type || !if_initial_movie_list)
{
printf("不满足初始条件\n");
return 1;
}
return 0;
}
void show_all_movies()
{
if (check())
{
return;
}
struct movie *p = head;
p = p->next;
while (p != NULL)
{
printf("id: %d name: %s director: %s language: %s year: %d score: %d type_id: %d\n", p->id, p->name, p->director, p->language,
p->year, p->score, p->type_id);
p = p->next;
}
}
void delete_movie()
{
if (check()) {
return;
}
show_all_movies();
printf("请输入要删除的电影的id:");
int id;
scanf("%d", &id);
struct movie *p, *q;
q = head;
p = head->next;
while (p != NULL && id != p->id)
{
q = p;
p = p->next;
}
if (NULL == p)
{
printf("没有找到指定id的电影\n");
return;
}
if (id == p->id)
{
q->next = p->next;
free(p);
printf("删除成功!\n");
return;
}
}
void insert_at_head(struct movie *p)
{
p->next = head->next;
head->next = p;
}
void add_movie()
{
if (check())
{
return;
}
struct movie *p;
p = (struct movie*)malloc(sizeof(struct movie));
printf("请输入电影的id:");
scanf("%d", &p->id);
printf("请输入电影的名字:");
scanf("%s", &p->name);
printf("请输入电影的导演:");
scanf("%s", &p->director);
printf("请输入电影的语言:");
scanf("%s", &p->language);
printf("请输入电影的年:");
scanf("%d", &p->year);
printf("请输入电影的评分:");
scanf("%d", &p->score);
printf("请输入电影类型的id:");
scanf("%d", &p->type_id);
p->next = NULL;
insert_at_head(p);
printf("添加成功!\n");
}
void modify_movie()
{
if (check())
{
return;
}
printf("请输入要修改信息的电影的id:");
int id;
scanf("%d", &id);
struct movie *p;
p = head->next;
while (p != NULL && id != p->id)
{
p = p->next;
}
if (NULL == p)
{
printf("没有找到指定id的电影\n");
return;
}
if (id == p->id)
{
printf("请输入电影的名字:");
memset(p->name, '\0', 100);
scanf("%s", &p->name);
printf("请输入电影的导演:");
memset(p->director, '\0', 100);
scanf("%s", &p->director);
printf("请输入电影的语言:");
memset(p->language, '\0', 100);
scanf("%s", &p->language);
printf("请输入电影的年:");
scanf("%d", &p->year);
printf("请输入电影的评分:");
scanf("%d", &p->score);
printf("请输入电影类型的id:");
scanf("%d", &p->type_id);
return;
}
}
void show_a_movie()
{
if (check())
{
return;
}
printf("请输入要查看的电影的id:");
int id;
scanf("%d", &id);
struct movie *p;
p = head->next;
while (p != NULL && id != p->id)
{
p = p->next;
}
if (NULL == p)
{
printf("没有找到指定id的电影\n");
return;
}
if (id == p->id)
{
printf("id: %d name: %s director: %s language: %s year: %d score: %d type_id: %d\n", p->id, p->name, p->director, p->language,
p->year, p->score, p->type_id);
return;
}
}
void show_movie_types()
{
if (!if_set_type)
{
return;
}
printf("\n电影类别如下:\n");
int i;
for (i = 0; i < type_num; i++)
{
printf("id: %d name: %s\n", mts[i].id, mts[i].name);
}
}
void set_movie_types()
{
if (if_set_type)
{
printf("已经设置电影类别信息,不可修改!");
return;
}
else
{
printf("请输入电影类型数量: ");
scanf("%d", &type_num);
int i;
for (i = 0; i < type_num; i++)
{
mts[i].id = i;
printf("请输入类别:");
scanf("%s", &mts[i].name);
}
printf("设置成功!\n");
}
if_set_type = 1;
}
void show_cmd()
{
printf("*需要依次执行 1.设置电影类别 和 2.初始化电影链表 才能执行其他操作\n");
printf("1.设置电影类别\n");
printf("2.初始化电影链表\n");
printf("3.添加电影信息\n");
printf("4.删除电影信息\n");
printf("5.显示某部电影的信息\n");
printf("6.修改电影信息\n");
printf("7.将某个类别的电影按评分进行排序\n");
printf("8.显示全部电影信息\n");
printf("0.退出系统\n");
}
void initial_movie_list()
{
if (!if_set_type)
{
printf("不满足初始条件\n");
return;
}
if (if_initial_movie_list)
{
printf("已经初始化电影列表,不能重复操作!\n");
return;
}
int n;
show_movie_types();
printf("\n请输入电影数量:");
scanf("%d", &n);
printf("\n");
int i;
for (i = 0; i < n; i++)
{
struct movie *p;
p = (struct movie*)malloc(sizeof(struct movie));
printf("\n请输入电影的id:");
scanf("%d", &p->id);
printf("请输入电影的名字:");
scanf("%s", &p->name);
printf("请输入电影的导演:");
scanf("%s", &p->director);
printf("请输入电影的语言:");
scanf("%s", &p->language);
printf("请输入电影的年:");
scanf("%d", &p->year);
printf("请输入电影的评分:");
scanf("%d", &p->score);
printf("请输入电影类型的id:");
scanf("%d", &p->type_id);
printf("\n");
p->next = NULL;
insert_at_head(p);
}
printf("电影链表初始化成功!\n");
if_initial_movie_list = 1;
}
void initial()
{
head = (struct movie*)malloc(sizeof(struct movie));
head->next = NULL;
}
void destroy_movie_list()
{
}
void sort()
{
if (check())
{
return;
}
show_movie_types();
printf("请输入一个电影类型的id,程序会将该类型的电影按照评分进行升序排序: ");
int id;
scanf("%d", &id);
int n = 0;
struct movie *p;
p = head->next;
while (p != NULL)
{
if (id == p->type_id)
{
memcpy(&movie_sort[n++], p, sizeof(struct movie));
}
p = p->next;
}
if (n == 0)
{
printf("没有找到该类型的电影\n");
return;
}
int i, j;
struct movie temp;
for (i = 0; i < n - 1; i++)
{
for (j = 0; j < n - 1 - i; j++)
{
if (movie_sort[j].score > movie_sort[j + 1].score)
{
temp = movie_sort[j];
movie_sort[j] = movie_sort[j + 1];
movie_sort[j + 1] = temp;
}
}
}
printf("共找到%d部类型的电影\n", n);
for (i = 0; i < n; i++)
{
printf("id: %d name: %s director: %s language: %s year: %d score: %d type_id: %d\n", movie_sort[i].id, movie_sort[i].name, movie_sort[i].director, movie_sort[i].language,
movie_sort[i].year, movie_sort[i].score, movie_sort[i].type_id);
}
}
int main()
{
initial();
int cmd;
while (1)
{
show_cmd();
scanf("%d", &cmd);
switch (cmd)
{
case 1:set_movie_types(); break;
case 2:initial_movie_list(); break;
case 3:add_movie(); break;
case 4:delete_movie(); break;
case 5:show_a_movie(); break;
case 6:modify_movie(); break;
case 7:sort(); break;
case 8:show_all_movies(); break;
case 0:return 0;
}
system("pause");
system("cls");
}
return 0;
}