C语言单链表菜品管理系统

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我的大一上学期期末项目，也是C语言的期末大作业。

使用单链表进行菜品信息的存储，系统有菜品的增删改查、排序、安全输入、统计、随机输出和文件输入输出等功能。

现在回去看代码想给自己一锤子（误）

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包含文件

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函数说明

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代码

900行有点长

#include <stdio.h>
#include <stdlib.h>
#include <ctype.h>
#include <string.h>
#include <time.h>
#include <windows.h>

#define SIZE1 100 //名称，价格等字数
#define SIZE2 200 //限制评价字数

typedef struct _node
{							//链表的节点结构体
	char name[SIZE1];		//菜品名称
	char restaurant[SIZE1]; //饭店名字
	float price;			//菜的价格
	int fraction;			//菜的评分
	char comment[SIZE2];	//菜品评价
	struct _node *next;
} Node;
typedef struct _list //方便对链表操作
{
	Node *head;
	Node *pa;
	Node *pb;
	Node *pc;
} List;
//菜单
void menu(void);			   //一级菜单
void menu_inquire(List *list); //二级菜单_查询菜单
void help(void);			   //二级菜单_帮助菜单
int menu_sort(List *list);	   //三级菜单_排序方法
//对节点操作
void add(List *list);	  //添加节点
void delete (List *list); //删除节点
void revise(List *list);  //修改节点
//安全输入
char *s_gets(char *st, int n); //安全输入字符
int get_int(void);			   //安全输入int型
float get_float(void);		   //安全输入float型
//链表的输出和操作
void inquire_all(List *list);			//输出链表全部节点
void inquire_one(List *list);			//输出链表指定菜名节点
void inquire_restaurant(List *list);	//输出链表指定饭店节点
void inquire_part_price(List *list);	//输出一定价格以下的菜品(这功能。。贫穷)
void inquire_part_fraction(List *list); //输出一定评分以上的菜品
void average_percentage(List *list);	//查询某饭店或食堂的平均价格和评分
void output(Node *p);					//方便输出
void random_menu(List *list);			//随机输出一道菜
void empty(List *list);					//清空链表
//文件操作
void save(List *list);	   //保存
void read_txt(List *list); //读取文件_初始链表
//单链表的排序
void sort_ascending(List *list);		 //菜品按价格从低到高排序
void sort_descending(List *list);		 //菜品按价格从高到低排序
void sort_score(List *list);			 //菜品按评分从高到低排序
int calculate(List *list);				 //计算出单链表的节点个数
void swap1(List *list, List *list_swap); //单链表冒泡排序的算法块1
void swap2(List *list, List *list_swap); //单链表冒泡排序的算法块2
//其他
int random_number(List *list); //随机生成不大于节点数的整数
void color(int a);			   //控制台文本颜色
//______________________________________________________
//------------------------------------------------------
int main() //主函数
{
	//system("chcp 65001");//GB2313
	//system("chcp 936");//UTF8
	//system("cls");
	menu(); //输出功能菜单
	//佛祖开光无bug
	return 0;
}
//菜单
void menu() //一级菜单
{
	int options, z = 1;
	List list;
	list.head = NULL;				   //head指向空，链表不存在
	FILE *fp = fopen("Menu.txt", "a"); //若无Menu.txt文件，则创建一个
	fclose(fp);
	read_txt(&list); //读入txt中的数据，初始化链表
	while (z)
	{
		system("cls");
		printf("\n");
		color(2);
		printf("|-----------------------------------------------------\n");
		color(14);
		printf("|                    菜品信息系统             \n");
		color(2);
		printf("|-----------------------------------------------------\n");
		color(11);
		printf("|********************系统功能菜单*********************\n");
		color(2);
		printf("|-----------------------------------------------------\n");
		color(15);
		printf("|*******************|1、使用帮助|                       \n");
		printf("|*******************|2、添加菜品信息|                    \n");
		printf("|*******************|3、删除菜品信息|                    \n");
		printf("|*******************|4、查询菜品信息|                    \n");
		printf("|*******************|5、修改菜品信息|                    \n");
		printf("|*******************|6、今天吃什么|                     \n");
		printf("|*******************|7、清空所有数据|                     \n");
		printf("|*******************|8、保存|\n");
		color(2);
		printf("|-----------------------------------------------------\n");
		color(15);
		printf("|*******************|0、退出系统|                       \n");
		color(12);
		printf("|!!!前请先保存再退出系统,否则数据会丢失!!!\n");
		color(2);
		printf("|-----------------------------------------------------\n");
		color(11);
		printf("请输入功能序号：");
		color(15);
		options = get_int();
		switch (options)
		{
		case 0:
			z = 0; //跳出循环
			printf("即将退出系统。\n");
			break;
		case 1:
			help();
			break;
		case 2:
			add(&list);
			break;
		case 3:
			delete (&list);
			break;
		case 4:
			menu_inquire(&list);
			break;
		case 5:
			revise(&list);
			break;
		case 6:
			random_menu(&list);
			break;
		case 7:
			empty(&list);
			break;
		case 8:
			save(&list);
			break;
		default:
			color(12);
			printf("无该功能，请重新输入\n");
			color(11);
			system("pause");
			color(15);
		}
	}
	system("pause");
}
void help() //二级菜单_帮助菜单
{
	system("cls");
	printf("\n");
	color(2);
	printf("|-----------------------------------------------------------------\n");
	color(15);
	printf("|使用帮助：\n");
	printf("|1、本菜品信息系统可供用户自行修改内容\n");
	printf("|2、因为考虑到不同饭店有同样名称的菜品，本系统允许菜品名称有重复\n");
	printf("|3、请勿输入错误信息，以免造成程序出错\n");
	printf("|4、关闭系统前记得保存！否则数据会丢失\n");
	printf("|5、有bug联系1934009145@qq.com\n");
	printf("|6、github地址:github.com/qxchuckle/Dishes-Management-System\n");
	color(2);
	printf("|-----------------------------------------------------------------\n");
	printf("\n");
	color(11);
	system("pause");
}
void menu_inquire(List *list) //二级菜单_查询菜单
{
	int options, z = 1;
	List *p = list;			//方便传结构体指针
	if (list->head == NULL) //判断链表是否为空
	{
		color(12);
		printf("还未存入任何菜品！无法查询！\n");
		color(11);
		system("pause");
		return; //为空结束函数
	}
	while (z)
	{
		system("cls");
		printf("\n");
		color(2);
		printf("|-----------------------------------------------------\n");
		color(15);
		printf("|1、查询全部菜品信息\n");
		printf("|2、按菜名查询菜品信息\n");
		printf("|3、查询饭店或食堂的全部菜品信息\n");
		printf("|4、查询某价格以下的全部菜品\n");
		printf("|5、查询某评分以上的全部菜品\n");
		printf("|6、查询某饭店或食堂的平均价格、评分和价格区间占比\n");
		printf("|0、返回主菜单\n");
		color(2);
		printf("|-----------------------------------------------------\n");
		color(11);
		printf("请输入功能序号：");
		color(15);
		options = get_int();
		switch (options)
		{
		case 0:
			z = 0;
			break;
		case 1:
			if (menu_sort(p))
				inquire_all(p);
			return;
		case 2:
			inquire_one(p);
			return;
		case 3:
			if (menu_sort(p))
				inquire_restaurant(p);
			return;
		case 4:
			if (menu_sort(p))
				inquire_part_price(p);
			return;
		case 5:
			if (menu_sort(p))
				inquire_part_fraction(p);
			return;
		case 6:
			average_percentage(p);
			return;
		default:
			color(12);
			printf("无该功能，请重新输入\n");
			color(11);
			system("pause");
		}
	}
}
int menu_sort(List *list) //三级菜单_排序方法
{
	int options, z = 1, n = 1;
	List *p = list;
	while (z)
	{
		system("cls");
		printf("\n");
		color(2);
		printf("|-----------------------------------------------------\n");
		color(15);
		printf("|1、按价格从低到高排序\n");
		printf("|2、按价格从高到低排序\n");
		printf("|3、按评分从高到低排序\n");
		printf("|4、不排序\n");
		printf("|0、返回主菜单\n");
		color(2);
		printf("|-----------------------------------------------------\n");
		color(11);
		printf("请输入功能序号：");
		color(15);
		options = get_int();
		switch (options)
		{
		case 0:
			z = 0;
			return z;
		case 1:
			sort_ascending(p);
			return n;
		case 2:
			sort_descending(p);
			return n;
		case 3:
			sort_score(p);
			return n;
		case 4:
			return n;
		default:
			color(12);
			printf("无该功能，请重新输入\n");
			color(11);
			system("pause");
			color(15);
		}
	}
}
//对节点操作
void add(List *list) //添加节点
{
	float k = 1;
	int n = 0, i = 0;
	Node *last = list->head;
	Node *p1 = (Node *)malloc(sizeof(Node)), *p; //给节点分配空间
	p1->next = NULL;
	system("cls");
	puts("开始录入菜品：\n----------------\n");
	puts("请输入菜品名称：");
	do
	{
		s_gets(p1->name, SIZE1);
	} while (strlen(p1->name) == 0);
	puts("请输入菜品所属饭店or食堂名称：");
	do
	{
		s_gets(p1->restaurant, SIZE1);
	} while (strlen(p1->restaurant) == 0);
	for (p = list->head; p; p = p->next) //遍历链表
	{
		if (!(strcmp(p1->name, p->name) || strcmp(p1->restaurant, p->restaurant)))
		{
			color(12);
			printf("该饭店/食堂内已存在同名菜品！\n");
			color(11);
			system("pause");
			return;
		}
	}
	puts("请输入菜品的价格：");
	p1->price = get_float();
	puts("请输入0-10的整数对菜品进行评分：");
	do
	{
		n = get_int();
		if (n >= 0 && n <= 10) //判断评分是否是0-10
		{
			p1->fraction = n;
			i = 1;
		}
		else
		{
			color(12);
			puts("评分不在规定范围内，请重新输入：");
			color(15);
		}
	} while (!i);
	puts("请对菜品进行评价：");
	do
	{
		s_gets(p1->comment, SIZE2);
	} while (strlen(p1->comment) == 0);
	if (last) //如果last有值，则说明head已指向链表第一个节点
	{
		while (last->next)
		{
			last = last->next; //last始终指向最后一个节点
		}
		last->next = p1; //在最后一个节点后面再加一个节点
	}
	else
	{
		list->head = p1; //如果last为NULL，则要将head指向第一个节点
	}
	color(11);
	puts("录入成功！");
	system("pause");
}
void delete (List *list) //删除节点
{
	int n = 0;
	char a[SIZE1];
	char b[SIZE1];
	Node *p, *q;
	if (list->head == NULL)
	{ //判断链表是否为空
		printf("还未存入任何菜品！删除失败！\n");
		system("pause");
		return;
	}
	system("cls");
	printf("请输入你要删除的菜品名称：");
	s_gets(a, SIZE1);
	printf("请输入菜品所属饭店名称：");
	s_gets(b, SIZE1);
	for (q = NULL, p = list->head; p; q = p, p = p->next)
	{														   //遍历链表
		if (!(strcmp(a, p->name) || strcmp(b, p->restaurant))) //判断是否找到要修改的节点
		{
			n++;   //记录找到了
			if (q) //判断找到的是不是第一个节点
			{
				q->next = p->next; //让该节点的前一个节点都next指向后一个节点
			}
			else
			{
				list->head = p->next; //让head的next指向后一个节点
			}
		}
	}
	if (!n)
	{
		printf("\n没有这道菜！\n");
	}
	else
	{
		printf("\n删除成功%d道菜。\n", n);
	}
	color(11);
	system("pause");
}
void revise(List *list) //修改节点
{
	float k = 1;
	int n = 0, m = 0, i = 0;
	char a[SIZE1];
	char b[SIZE1];
	Node *p, *q;
	if (list->head == NULL) //判断链表是否为空
	{
		printf("还未存入任何菜品！无法修改！\n");
		system("pause");
		return;
	}
	system("cls");
	printf("请输入要修改的菜品的名称：");
	s_gets(a, SIZE1);
	printf("请输入菜品所属饭店名称：");
	s_gets(b, SIZE1);
	for (q = NULL, p = list->head; p; q = p, p = p->next) //遍历链表
	{
		if (!(strcmp(a, p->name) || strcmp(b, p->restaurant))) //判断是否找到要删除的节点
		{
			n++; //记录找到
			printf("\n原来的菜品信息:\n");
			printf("|菜名:%s\n", p->name);
			printf("|所属:%s\n", p->restaurant);
			printf("|价格:%.2f\n", p->price);
			printf("|评分:%d\n", p->fraction);
			printf("|评价:%s\n", p->comment);
			printf("\n");
			puts("请修改菜品的价格：");
			p->price = get_float();
			puts("请输入0-10的整数以修改菜品的评分：");
			do
			{
				m = get_int();
				if (m >= 0 && m <= 10)
				{
					p->fraction = m;
					i = 1;
				}
				else
				{
					color(12);
					puts("评分不在规定范围内，请重新输入：");
					color(15);
				}
			} while (!i);
			puts("请修改对菜品的评价：");
			do
			{
				s_gets(p->comment, SIZE2);
			} while (strlen(p->comment) == 0);
		}
	}
	if (n)
	{
		printf("\n修改完成。\n");
	}
	else
	{
		printf("\n没有这道菜！\n");
	}
	color(11);
	system("pause");
}
//安全输入
char *s_gets(char *m, int n) //安全输入字符
{
	char *p;
	char *find;
	p = fgets(m, n, stdin);
	if (p)
	{
		find = strchr(m, '\n'); //查找换行符
		if (find)				//如果地址不是NULL
			*find = '\0';		//在此处放一个空字符
		else
			while (getchar() != '\n')
				continue;
	}
	return p;
}
int get_int() //安全输入int型
{
	int n;
	char ch;
	while (scanf("%d%*c", &n) != 1)
	{
		while ((ch = getchar()) != '\n')
			putchar(ch);
		color(4);
		printf(" 不是一个正整数！\n请您重新输入：\n");
		color(15);
	}
	return n;
}
float get_float() //安全输入float型
{
	float n = 1;
	char ch;
	do
	{
		if (n <= 0)
		{ //用户输入不是正数输出提示
			color(12);
			puts("请重新输入一个正数！");
			color(15);
		}
		while (scanf("%f%*c", &n) != 1)
		{
			while ((ch = getchar()) != '\n')
				putchar(ch);
			color(12);
			printf(" 不是一个正数！\n请您重新输入：\n");
			color(15);
		}
	} while (n <= 0);
	return n;
}
//链表的输出和操作
void inquire_all(List *list) //输出链表全部节点
{
	Node *p;
	int n = 1;
	system("cls");
	for (p = list->head; p; p = p->next) //遍历链表
	{
		printf("\n第%d道菜:", n);
		output(p);
		n++;
	}
	color(11);
	printf("\n所有菜品查询完毕\n");
	system("pause");
}
void inquire_one(List *list) //输出指定菜名
{
	int n = 0;
	char a[SIZE1];
	Node *p;
	system("cls");
	printf("请输入你要找的菜品名称：");
	s_gets(a, SIZE1);
	for (p = list->head; p; p = p->next) //遍历链表
	{
		if (!strcmp(a, p->name)) //判断是否找到
		{
			output(p); //调用函数输出节点信息
			n++;	   //记录找到多少节点
		}
	}
	color(11);
	printf("\n共查找到%d道菜\n", n);
	system("pause");
}
void inquire_restaurant(List *list) //输出指定饭店所有菜品
{
	int n = 0;
	char a[SIZE1];
	Node *p;
	system("cls");
	printf("请输入你要找的饭店或食堂：");
	s_gets(a, SIZE1);
	for (p = list->head; p; p = p->next) //遍历链表
	{
		if (!strcmp(a, p->restaurant)) //判断是否找到
		{
			output(p); //调用函数输出节点信息
			n++;	   //记录找到多少节点
		}
	}
	color(11);
	printf("\n共查找到%d道菜\n", n);
	system("pause");
}
void inquire_part_price(List *list) //输出一定价格以下的菜品(这功能。。贫穷)
{
	int n = 0;
	float money, k = 1;
	char a[SIZE1];
	Node *p;
	system("cls");
	printf("请输入封顶价格：");
	money = get_float();
	for (p = list->head; p; p = p->next) //遍历链表
	{
		if (p->price <= money) //判断是否符合要求
		{
			output(p); //调用函数输出节点信息
			n++;	   //记录找到多少节点
		}
	}
	color(11);
	printf("\n共查找到%d道菜\n", n);
	system("pause");
}
void inquire_part_fraction(List *list) //输出一定评分以上的菜品
{
	int n = 0;
	int score;
	char a[SIZE1];
	Node *p;
	system("cls");
	printf("请输入最低评分：");
	score = get_int();
	for (p = list->head; p; p = p->next) //遍历链表
	{
		if (p->fraction >= score) //判断是否符合要求
		{
			output(p); //调用函数输出节点信息
			n++;	   //记录找到多少节点
		}
	}
	printf("\n共查找到%d道菜\n", n);
	color(11);
	system("pause");
}
void average_percentage(List *list) //查询某饭店或食堂的平均价格和评分
{
	int n = 0;
	float sum1 = 0, sum2 = 0, b[5] = {0};
	char a[SIZE1];
	Node *p;
	system("cls");
	printf("请输入你要查的饭店或食堂：");
	s_gets(a, SIZE1);
	for (p = list->head; p; p = p->next) //遍历链表
	{
		if (!strcmp(a, p->restaurant)) //判断是否找到
		{
			sum1 += p->price;	 //累加价格
			sum2 += p->fraction; //累加评分
			if (p->price <= 5)
			{
				b[0]++;
			}
			else
			{
				if (p->price <= 10)
				{
					b[1]++;
				}
				else
				{
					if (p->price <= 15)
					{
						b[2]++;
					}
					else
					{
						if (p->price < 20)
						{
							b[3]++;
						}
						else
						{
							b[4]++;
						}
					}
				}
			}
			n++; //记录找到多少节点
		}
	}
	color(11);
	if (n)
	{
		printf("该饭店/食堂的一共有%d道菜\n平均价格是：%.2f\t平均评分是：%.2f\n", n, sum1 / n, sum2 / n);
		printf("其中：\n0~5元占:%.1f%%\n5~10元占:%.1f%%\n10~15元占:%.1f%%\n", b[0] / n * 100, b[1] / n * 100, b[2] / n * 100);
		printf("15~20元占:%.1f%%\n20元以上占:%.1f%%\n\n", b[3] / n * 100, b[4] / n * 100);
	}
	else
	{
		color(12);
		printf("无该饭店或食堂！\n\n");
	}
	color(11);
	system("pause");
}
void output(Node *p) //方便输出
{
	printf("\n|菜名:%s\n", p->name);
	printf("|所属:%s\n", p->restaurant);
	printf("|价格:%.2f\n", p->price);
	printf("|评分:%d\n", p->fraction);
	printf("|评价:%s\n", p->comment);
}
void random_menu(List *list) //随机输出一道菜
{
	system("cls");
	if (list->head == NULL) //判断链表是否为空
	{
		color(12);
		printf("还未存入任何菜品！\n");
		color(11);
		system("pause");
		return;
	}
	List *q = list;
	Node *p = list->head;
	int n = random_number(q), i = 1; //将随机出来的数赋予n，并初始i等于第一道菜，判断数字是否相等，即可找到那个随机出来的菜
	while (p != NULL)
	{

		if (i == n) //借助随机数来随机输出菜
		{
			output(p);
			color(11);
			system("pause");
			return;
		}
		i++;
		p = p->next;
	}
}
void empty(List *list) //清空链表
{
	Node *p, *q;
	int n;
	system("cls");
	color(12);
	printf("此操作将清空所有数据！\n输入 1 继续，输入 0 取消：\n");
	do
	{
		n = get_int();
	} while (!(n == 0 || n == 1));
	if (n == 1)
	{
		for (p = list->head; p; p = q) //遍历链表
		{
			q = p->next;
			free(p);
		}
		list->head = NULL;
		printf("清除完成！\n");
		system("pause");
		return;
	}
}
//文件操作
void save(List *list) //保存
{
	if (list->head == NULL)
	{
		color(12);
		printf("还未存入任何菜品！保存为空！\n");
		color(11);
		system("pause");
		return;
	}
	Node *p = list->head;
	FILE *fp = fopen("Menu.txt", "w");
	if (fp)
	{
		while (p)
		{
			fprintf(fp, "\n%s %s %0.2f %d %s", p->name, p->restaurant, p->price, p->fraction, p->comment);
			p = p->next;
		}
		fclose(fp);
		color(11);
		printf("\n保存成功\n");
		system("pause");
	}
	else
	{
		color(12);
		printf("保存失败，请自查或联系作者");
	}
}
void read_txt(List *list) //读取文件_初始链表
{
	int i = 1;
	Node *last;
	Node *p1;
	int a = 1;
	char f[5];
	FILE *fp = fopen("Menu.txt", "r");
	fgets(f, 10, fp); //读取第一行，并进入下一行，防止bug
	while (!feof(fp)) //当读取到文件结束符跳出循环结束读取
	{
		last = list->head;
		p1 = (Node *)malloc(sizeof(Node));
		p1->next = NULL;
		fscanf(fp, "%s%s%f%d%s", p1->name, p1->restaurant, &p1->price, &p1->fraction, p1->comment);
		if (last)
		{
			while (last->next)
			{
				last = last->next;
			}
			last->next = p1;
		}
		else
		{
			list->head = p1;
		}
	}
	fclose(fp);
}
//单链表的冒泡排序，这指来指去，作者一口气写完到断气的，不想加注释了，应该会有更好的算法，咕咕咕，以后优化
void sort_ascending(List *list) //菜品按价格从低到高排序
{
	int n = 0, i, k, num;
	List *p = list;
	Node *p1 = list->head, *p2, *p3;
	List list_swap;
	n = calculate(p);
	list_swap.pa = p1;
	list_swap.pb = p2;
	list_swap.pc = p3;
	for (i = 0; i < n - 1; i++)
	{
		list_swap.pa = list->head;		   //当前
		list_swap.pb = NULL;			   //前一个
		list_swap.pc = list_swap.pa->next; //下一个
		for (k = 0; k < n - i - 1; k++)
		{
			if (list_swap.pa->price > list_swap.pc->price)
			{
				swap1(p, &list_swap);
			}
			else
			{
				swap2(p, &list_swap);
			}
		}
	}
}
void sort_descending(List *list) //菜品按价格从高到低排序
{
	int n = 0, i, k, num;
	List *p = list;
	Node *p1 = list->head, *p2, *p3;
	List list_swap;
	n = calculate(p);
	list_swap.pa = p1;
	list_swap.pb = p2;
	list_swap.pc = p3;
	for (i = 0; i < n - 1; i++)
	{
		list_swap.pa = list->head;		   //当前
		list_swap.pb = NULL;			   //前一个
		list_swap.pc = list_swap.pa->next; //下一个
		for (k = 0; k < n - i - 1; k++)
		{
			if (list_swap.pa->price < list_swap.pc->price)
			{
				swap1(p, &list_swap);
			}
			else
			{
				swap2(p, &list_swap);
			}
		}
	}
}
void sort_score(List *list) //菜品按评分从高到低排序
{
	int n = 0, i, k, num;
	List *p = list;
	Node *p1 = list->head, *p2, *p3;
	List list_swap;
	n = calculate(p);
	list_swap.pa = p1;
	list_swap.pb = p2;
	list_swap.pc = p3;
	for (i = 0; i < n - 1; i++)
	{
		list_swap.pa = list->head;		   //当前
		list_swap.pb = NULL;			   //前一个
		list_swap.pc = list_swap.pa->next; //下一个
		for (k = 0; k < n - i - 1; k++)
		{
			if (list_swap.pa->fraction < list_swap.pc->fraction)
			{
				swap1(p, &list_swap);
			}
			else
			{
				swap2(p, &list_swap);
			}
		}
	}
}
int calculate(List *list) //计算出单链表的节点个数
{
	int n = 0;
	Node *p = list->head;
	while (p->next != NULL)
	{
		n++;
		p = p->next;
	}
	return n + 1;
}
void swap1(List *list, List *list_swap) //单链表冒泡排序的算法块1
{
	if (list_swap->pb)
	{
		list_swap->pb->next = list_swap->pa->next;
		list_swap->pa->next = list_swap->pc->next;
		list_swap->pc->next = list_swap->pa;
	}
	else
	{
		list->head = list_swap->pa->next;
		list_swap->pa->next = list_swap->pc->next;
		list_swap->pc->next = list_swap->pa;
	}
	list_swap->pb = list_swap->pc;
	list_swap->pc = list_swap->pa->next;
}
void swap2(List *list, List *list_swap) //单链表冒泡排序的算法块2
{
	if (list_swap->pb)
	{
		list_swap->pa = list_swap->pa->next;
		list_swap->pc = list_swap->pa->next;
		list_swap->pb = list_swap->pb->next;
	}
	else
	{
		list_swap->pa = list_swap->pa->next;
		list_swap->pc = list_swap->pa->next;
		list_swap->pb = list->head;
	}
}
//其他
int random_number(List *list) //随机生成不大于节点数的整数
{
	int n = 0, m = 0, sum = 1, i = 0;
	List *q = list;
	srand((unsigned)time(NULL) * 12);
	m = calculate(q);
	i = m;
	while (m > 0)
	{
		sum = sum * 10;
		m = m / 10;
	}
	while (1)
	{
		n = rand() % sum;
		if (n <= i && n > 0)
		{
			i = n;
			break;
		}
	}
	return i;
}
void color(int a) //控制台文本颜色
{
	SetConsoleTextAttribute(GetStdHandle(STD_OUTPUT_HANDLE), a); //更改控制台文字颜色
}

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