航班管理系统(C语言)

航班管理系统
要求:
账号注册与登录
普通用户:查看航班信息,查看已购买的航班信息,退票
管理员:增、删、改、查 航班信息

航班信息:

起始点,目的地,航班时间,剩余票数,价格

已完成:

只能注册一个账号
普通用户:查看航班信息,查看已购买的航班信息,退票
管理员:增、删、改、查 航班信息

待完成:

多用户注册
管理员增加、修改航班信息时增加信息检验是否合法

使用数据结构:

单链表(增删改查)
结构体
指针

完成日期:
2021/09/12 18:00

历时10h
参考资料:
一、数据结构—单链表的基本操作(源代码)
二、C语言实现学生信息管理系统(单链表有错误,仅供参考!)

#include    
#include  
#include  
#include  

#define ID 30
#define PW 30


static	char user_id[ID] = {0}; //账号
static	char user_pw[PW] = {0}; //密码

char flight_name[10];    //航班名称
char flight_start[10];   //起始点
char flight_bourn[10];   //目的地
char flight_schedule[10];     //航班时间 
char flight_s_votes[10];      //剩余票数
char flight_price[5];        //价格

typedef struct Flight       //航班信息
{  
	char name[10];         //航班名称
	char start[10]; 		//起始点  
	char bourn[10];  		//目的地
	char f_schedule[10];   //航班时间   
	char spare_votes[10];		//剩余票数 
	char price[5];			    //价格
}flight;  

typedef struct LNode        //节点
{  
	flight data;            //航班信息
	struct LNode *next;     //指针
}Node,*LinkList; 

void InitList(LinkList *pHead)  //初始化链表 //创建头结点
{
	*pHead=(LinkList)malloc(sizeof(Node));
	if(NULL!=pHead)
		(*pHead)->next=NULL;
	else
		printf("\n开辟内存失败\n"); 
} 
//创建新结点 
LinkList get_newNode(LinkList *L)
{
	LinkList newNode=(LinkList)malloc(sizeof(Node)); 
	if(NULL!=newNode)
	{
		printf("请输入要增加的航班名称:  \t");
		scanf("%s", flight_name);
		strcpy(newNode->data.name, flight_name);
		// newNode->data.name = flight_name;
		printf("请输入该航班的起始点:  \t");
		scanf("%s", flight_start);
		strcpy(newNode -> data.start, flight_start);
		printf("请输入该航班的目的地:  \t");
		scanf("%s", flight_bourn);
		strcpy(newNode -> data.bourn, flight_bourn);
		printf("请输入该航班的航班时间:\t");
		scanf("%s", flight_schedule);
		strcpy(newNode -> data.f_schedule, flight_schedule);
		printf("请输入该航班的价格:    \t");
		scanf("%s", flight_price);
		strcpy(newNode -> data.price, flight_price);
		printf("请输入该航班的剩余票数: \t");
		scanf("%s", flight_s_votes);
		strcpy(newNode -> data.spare_votes, flight_s_votes);
		// printf("%s,%s,%s,%s,%s,%s\n",
			// flight_name, flight_start, flight_bourn, 
			// flight_schedule,flight_price,flight_s_votes);
		newNode->next=NULL;

		LinkList aa=(*L)->next;
		while( aa != NULL)  //判断添加的航班是否存在
		{
			if((strcmp(aa -> data.name, flight_name) == 0)&&
				strcmp(aa -> data.start, flight_start) == 0&&
				strcmp(aa -> data.bourn, flight_bourn) == 0&&
				strcmp(aa -> data.f_schedule, flight_schedule) == 0  )
			{
				printf("\n此航班已存在!请再次确认!\n");
				return 0;
			}
			aa  = aa -> next;	
		}
		return newNode;
	}
	else
	{ 
		printf("\n开辟内存失败\n");
		return 0;
	} 
}
//打印 
void print_List(LinkList *L)
{
	LinkList p;
	p=(*L)->next;
	if(p==NULL)
		printf("暂无航班!\n");
	else
	{
		int i =0;
		while(NULL!=p)
		{
			printf("\n航班的名称:%s\n", p -> data.name);
			printf("航班的起始点:%s\n", p -> data.start);
			printf("航班的目的地:%s\n", p -> data.bourn);
			printf("航班的航班时间:%s\n", p -> data.f_schedule);
			printf("航班的剩余票数:%s\n", p -> data.spare_votes);
			printf("航班的价格:%s\n", p -> data.price);
			printf("\n");
			i++;
			p=p->next;
		}
		printf("共有%d个航班!\n",i); 
	}
} 
void addflight(LinkList *L)  //增航班信息
{
	int flag = 1;
	while(flag)
	{
		//尾插
		char s[2];
		int ch;
		LinkList tail; 
		tail=*L;
		while(NULL!=tail->next)		//让tail指向最后一个结点 
			tail = tail->next;
		tail->next = get_newNode(L);
		while(flag)
		{
		    printf("是否继续增加航班信息?是:1 否:0\n");
			scanf("%s",s);
			if (strspn(s, "01") == strlen(s))
			{
				ch = atoi(s);
				if(ch == 0)
				{
					printf("已退出增加航班!\n");
					flag = 0;
				}
				else
				{
					continue;
				}
		    }
		    else
		    {
		    	printf("请输入正确的序号!\n");
		    }		
		}			
    }
}

void deleteflight(LinkList *L)  //删航班信息
{
	printf("请输入要删除的航班信息:\t\n");
	printf("航班名称:\t");
	scanf("%s", flight_name);
	printf("航班起始点:\t");
	scanf("%s", flight_start);
	printf("航班目的地:\t");
	scanf("%s", flight_bourn);
	printf("航班时间:\t");
	scanf("%s",flight_schedule);

	LinkList p,q;

	for(p = *L; NULL != p -> next; p = p -> next)
	{
		if((strcmp(p -> next -> data.name, flight_name) == 0)&&
			strcmp(p -> next -> data.start, flight_start) == 0&&
			strcmp(p -> next -> data.bourn, flight_bourn) == 0&&
			strcmp(p -> next -> data.f_schedule, flight_schedule) == 0  )
		{
			q = p -> next;		//因为最后要释放被删除的结点,所以先记录下来 
			p -> next = q -> next;
			free(q);
			q = NULL;
			printf("删除成功\n");
			return;
		}
	} 
	printf("删除失败!,请检查此航班是否存在!\n"); 

}

void findflight(LinkList *L)  //查航班信息
{
	char choose[5];
	int flag = 1, ch;
	
	while(flag)
	{
		printf("\n\t** 请输入要查询的方式 **:\n");
		printf("\t**1.按航班的名称查询  **\n");
		printf("\t**2.按航班的起始点    **\n");
		printf("\t**3.按航班的目的地  **\n");
		printf("\t**4.按航班的航班时间  **\n");
		printf("\t**5.查询所有航班  **\n");		
		printf("\t**6.退出查询  **\n");
		scanf("%s",choose);
		if (strspn(choose, "0123456789") == strlen(choose))
		{
			ch = atoi(choose);
			switch(ch)
			{
				case 1:
					printf("请输入要查询的航班名称:\t");
					scanf("%s", flight_name);
					int ii=0;
					LinkList q=(*L)->next;
					while(q != NULL)
					{
						if(strcmp(q -> data.name, flight_name) == 0)
						{
							printf("\n该航班的名称:%s\n", q -> data.name);
							printf("该航班的起始点:%s\n", q -> data.start);
							printf("该航班的目的地:%s\n", q -> data.bourn);
							printf("该航班的航班时间:%s\n", q -> data.f_schedule);
							printf("该航班的剩余票数:%s\n", q -> data.spare_votes);
							printf("该航班的价格:%s\n", q -> data.price);
							ii++;
						}
						q = q -> next;
					}
					if(ii == 0)
					{
						printf("该航班不存在!\n");
					}
					else
					{
						printf("要查询的航班共有%d个\n",ii);
					}
					break;

				case 2:
					printf("请输入要查询的航班起始点:\t");
					scanf("%s", flight_start);
					int ai = 0;
					LinkList a=(*L)->next; 
					while(a != NULL)
					{
						if(strcmp(a -> data.start, flight_start) == 0)
						{
							printf("\n该航班的名称:%s\n", a -> data.name);							
							printf("该航班的起始点:%s\n", a -> data.start);
							printf("该航班的目的地:%s\n", a -> data.bourn);
							printf("该航班的航班时间:%s\n", a -> data.f_schedule);
							printf("该航班的剩余票数:%s\n", a -> data.spare_votes);
							printf("该航班的价格:%s\n", a -> data.price);
							ai++;
						}
						a = a -> next;
					}
					if(ai == 0)
					{
						printf("该航班不存在!\n");
					}
					else
					{
						printf("要查询的航班共有%d个\n",ai);
					}
					break;

				case 3:
					printf("请输入要查询的目的地:\t");
					scanf("%s", flight_bourn);
					int bi=0;
					LinkList b=(*L)->next;
					while(b != NULL)
					{
						if(strcmp(b -> data.bourn,flight_bourn) == 0)
						{
							printf("\n该航班的名称:%s\n", b -> data.name);
							printf("该航班的起始点:%s\n", b -> data.start);
							printf("该航班的目的地:%s\n", b -> data.bourn);
							printf("该航班的航班时间:%s\n", b -> data.f_schedule);
							printf("该航班的剩余票数:%s\n", b -> data.spare_votes);
							printf("该航班的价格:%s\n", b -> data.price);
							bi++;
						}
						b = b -> next;
					}
					if(bi == 0)
					{
						printf("该航班不存在!\n");
					}
					else
					{
						printf("要查询的航班共有%d个\n",bi);
					}
					break;

				case 4:
					printf("请输入要查询的航班时间:\t");
					scanf("%s", flight_schedule);
					int ci=0;
					LinkList c=(*L)->next;
					while(c != NULL)
					{
						if(strcmp(c -> data.f_schedule,flight_schedule) == 0)
						{
							printf("\n该航班的名称:%s\n", c -> data.name);
							printf("该航班的起始点:%s\n", c -> data.start);
							printf("该航班的目的地:%s\n", c -> data.bourn);
							printf("该航班的航班时间:%s\n", c -> data.f_schedule);
							printf("该航班的剩余票数:%s\n", c -> data.spare_votes);
							printf("该航班的价格:%s\n", c -> data.price);
							ci++;
						}
						c = c -> next;
					}
					if(ci == 0)
					{
						printf("该航班不存在!\n");
					}
					else
					{
						printf("要查询的航班共有%d个\n",ci);
					}
					break;

				case 5:
					print_List(L);
					break;
				case 6:
					flag = 0;
					break;

				default:
					printf("请输入正确的序号!\n");
					break;
			}
		}
		else
		{
			printf("请输入正确的序号!\n");
		}		
	}
	printf("已退出查询!\n");
}

void changeflight(LinkList *L)  //改航班信息
{
	int flag = 1;
	while(flag)
	{
		//暂存修改后的数据
		char flight_name1[10];    //航班名称
		char flight_start1[10];   //起始点
		char flight_bourn1[10];   //目的地
		char flight_schedule1[10];     //航班时间 
		char flight_s_votes1[10];      //剩余票数
		char flight_price1[5];        //价格

		printf("请输入要修改的航班信息:\t\n");
		printf("航班名称:\t");
		scanf("%s", flight_name);
		printf("航班起始点:\t");
		scanf("%s", flight_start);
		printf("航班目的地:\t");
		scanf("%s", flight_bourn);
		printf("航班时间:\t");
		scanf("%s",flight_schedule);

		LinkList w = (*L)->next;
		int pp = 0;
		while(NULL != w)
		{
			if((strcmp(w -> data.name, flight_name) == 0)&&
				strcmp(w -> data.start, flight_start) == 0&&
				strcmp(w -> data.bourn, flight_bourn) == 0&&
				strcmp(w -> data.f_schedule, flight_schedule) == 0  )
			{
				printf("\n修改后的航班名称:\n");
				scanf("%s", flight_name1);
				strcpy(w->data.name, flight_name1);

				printf("修改后的起始点:\n");
				scanf("%s", flight_start1);
				strcpy(w->data.start, flight_start1);

				printf("修改后的目的地:\n");
				scanf("%s", flight_bourn1);
				strcpy(w->data.bourn, flight_bourn1);

				printf("修改后的航班时间:\n");
				scanf("%s", flight_schedule1);
				strcpy(w->data.f_schedule, flight_schedule1);

				printf("修改后的剩余票数:\n");
				scanf("%s", flight_s_votes1);
				strcpy(w->data.spare_votes, flight_s_votes1);

				printf("修改后的价格:\n");
				scanf("%s", flight_price1);
				strcpy(w->data.price, flight_price1);

				pp = 1;
			}
			else
			{
                w = w -> next;
			}			
		}
		if( pp == 0)
		{
			printf("修改失败!无此航班!\n");
		}
		else
		{
			printf("修改成功!");
		}
		
		while(flag)
		{
			char n[5];
			int nn;
			printf("是否需要继续修改其他航班信息?继续:1 退出 :0\n");
			scanf("%s",n);
			if (strspn(n, "01") == strlen(n))
			{
				nn = atoi(n);
				if(nn == 0)
				{
					flag = 0;
				}
				else
				{
					break;
				}				
			}
			else
			{
				printf("请正确输入!\n");
			}		
		}		
	}
}

void admin(LinkList *L)      //管理员 增 删 查 改 航班信息
{
	char choose[10];
	int flag=1,ch;
	while(flag)
	{
		printf("\n");
		printf("请输入你要进行的操作:\t\n\n");
		printf("\t***1.增加航班信息  ***\t\n");
		printf("\t***2.删除航班信息  ***\t\n");
		printf("\t***3.查找航班信息  ***\t\n");
		printf("\t***4.修改航班信息  ***\t\n");
		printf("\t***5.退出管理员操作***\t\n");
		scanf("%s",choose);
		if (strspn(choose, "0123456789") == strlen(choose))
		{
			ch = atoi(choose);
			switch(ch)
			{
				case 1:
					addflight(L);
					break;

				case 2:
					deleteflight(L);
					break;

				case 3:
					findflight(L);
					break;

				case 4:
					changeflight(L);
					break;

				case 5:
					flag = 0;
					break;

				default:
					printf("请输入正确的序号!\n");
					break;
			}
		}
		else
		{
			printf("请输入正确的序号!\n");
		}
	}
	printf("已退出管理员操作!\n");
}


void findownerflight(LinkList *z)  //查看自己的航班
{
	int flag = 1;
	while(flag)
	{
		LinkList q = (*z) -> next;
		int i=1, aa = 0;
		while(q != NULL)
		{
			printf("\n购买的第%d个航班信息:\n",i);
			printf("已购买航班的名称:%s\n", q -> data.name);
			printf("已购买航班的起始点:%s\n", q -> data.start);
			printf("已购买航班的目的地:%s\n", q -> data.bourn);
			printf("已购买航班的航班时间:%s\n", q -> data.f_schedule);
			printf("已购买航班的剩余票数:%s\n", q -> data.spare_votes);
			printf("已购买航班的价格:%s\n", q -> data.price);
			i++;
			aa = 1;
			q = q -> next;
		}
		if( aa == 0)
		{
			printf("你未购买任何航班\n");
		}
		while(flag)
		{
			char n[5];
			int nn;
			printf("是否退出?继续查看:1 退出 :0\n");
			scanf("%s",n);
			if (strspn(n, "01") == strlen(n))
			{
				nn = atoi(n);
				if(nn == 0)
				{
					printf("退出成功!\n");
					flag = 0;
				}
				else
				{
					break;
				}				
			}
			else
			{
				printf("请正确输入!\n");
			}		
		}		
	}
}
LinkList buy(LinkList *L, LinkList *z)
{
	printf("\n请输入要购买的航班信息:\t\n");
	printf("航班名称:\t");
	scanf("%s", flight_name);
	printf("航班起始点:\t");
	scanf("%s", flight_start);
	printf("航班目的地:\t");
	scanf("%s", flight_bourn);
	printf("航班时间:\t");
	scanf("%s",flight_schedule);

	LinkList w = (*L)->next;
    LinkList u=(LinkList)malloc(sizeof(Node));
	int pp = 0;
	while(NULL != w)
	{
		if((strcmp(w -> data.name, flight_name) == 0)&&
			strcmp(w -> data.start, flight_start) == 0&&
			strcmp(w -> data.bourn, flight_bourn) == 0&&
			(strcmp(w -> data.f_schedule, flight_schedule) == 0)&&
			(NULL != u))
		{
			strcpy(u->data.name, w->data.name);
			strcpy(u->data.start, w->data.name);
			strcpy(u->data.bourn, w->data.name);
			strcpy(u->data.f_schedule, w->data.name);
			strcpy(u->data.spare_votes, w->data.name);
			strcpy(u->data.price, w->data.name);
			printf("购买成功!\n");
			pp = 1;
			return u;
		}
		else
		{
			w = w -> next;
		}			
	}
	if( pp == 0)
	{
		printf("够买失败!无此航班!\n");
		return 0;
	}		
}
void buyticket(LinkList *L, LinkList *z)
{
	int flag = 1;
	while(flag)
	{
		

		printf("\t**1.搜索航班信息 **\n");
		printf("\t**2.购买机票     **\n ");
		printf("\t**3.退出购票     **\n");
		char n[5];
		int nn;
		scanf("%s",n);
		if (strspn(n, "123") == strlen(n))
		{
			nn = atoi(n);
			LinkList tail1; 
			switch(nn)
			{
				case 1:
				    findflight(L);
				    break;

				case 2:				    
					tail1=*z;
					while(NULL!=tail1->next)		//让tail指向最后一个结点 
						tail1 = tail1->next;
					tail1->next = buy(L, z);				    
				    break;

				case 3:
 				    printf("退出成功!");
				    flag = 0;
				    break;
			}
		}
		else
		{
			printf("请正确输入!\n");
		}
	}
}

void Refund(LinkList *L)  //退票
{
	printf("请输入要退票的航班信息:\t\n");
	printf("航班名称:\t");
	scanf("%s", flight_name);
	printf("航班起始点:\t");
	scanf("%s", flight_start);
	printf("航班目的地:\t");
	scanf("%s", flight_bourn);
	printf("航班时间:\t");
	scanf("%s",flight_schedule);

	LinkList p,q;

	for(p = *L; NULL != p -> next; p = p -> next)
	{
		if((strcmp(p -> next -> data.name, flight_name) == 0)&&
			strcmp(p -> next -> data.start, flight_start) == 0&&
			strcmp(p -> next -> data.bourn, flight_bourn) == 0&&
			strcmp(p -> next -> data.f_schedule, flight_schedule) == 0  )
		{
			q = p -> next;		//因为最后要释放被删除的结点,所以先记录下来 
			p -> next = q -> next;
			free(q);
			q = NULL;
			printf("退票成功\n");
			return;
		}
	} 
	printf("退票失败!,请检查是否已购买此机票!\n"); 
}

// 	普通用户 
//只查看航班信息,票的余数 
//购买票的数量  可以查看自己的所购买的班次  退票
void common_user(LinkList *L, LinkList *z)   //普通用户
{
	int flag = 1, ch;
	while(flag)
	{
		printf("\n\t***1.查找航班信息      ***\t\n");
		printf("\t***2.查看已购买航班    ***\t\n");
		printf("\t***3.购买航班    ***\t\n");		
		printf("\t***4.退票             ***\t\n");
		printf("\t***5.退出普通用户操作  ***\t\n");
		printf("\n请输入你要进行的操作:\t\n");
		
		char choose[10];
		scanf("%s",choose);
		if (strspn(choose, "0123456789") == strlen(choose))
		{
			ch = atoi(choose);
			switch(ch)
			{
				case 1:
					findflight(L);
					break;

				case 2:
					findownerflight(z);
					break;
				case 3:
				    buyticket(L, z);
				    break;
				case 4:
					Refund(z);
					break;

				case 5:
					flag = 0;
					break;

				default:
					printf("请输入正确的序号!\n");
					break;
			}
		}
		else
		{
			printf("请输入正确的序号!\n");
		}
	}
	printf("退出普通用户操作成功!\n");
}

void login(char *id, char *pw)  //注册
{
	int flag = 1,n;
	char input_num[10] = {0};

	while(flag)
	{

		printf("\t**1.开始注册    2.返回主界面**\t\n");		
		scanf("%s",input_num);

		if (strspn(input_num, "0123456789") == strlen(input_num))
		{
			n = atoi(input_num);
			switch(n)
			{
				case 1:
					printf("请输入账号: \n");
					scanf("%s", id);
					printf("请输入密码: \n");
					scanf("%s", pw);

					printf("\n注册成功!请返回登陆!\n");

					break;

				case 2:
					printf("退出注册成功!\n");
					flag = 0;
					break;

				case 0:
					flag = 0;
					break;

				default :
					printf("请输入正确的序号!\n");
					break;				    
			}
		}
		else
		{
			 printf("请输入正确的序号!\n");
		}		
	}
}

void sign(char *u_id, char *u_pw, LinkList *L, LinkList *z)
{
	char login_id[ID] = {0}; 
	char login_pw[PW] = {0}; 

	// printf("%s\t%s\n", u_id, u_pw);

	printf("请输入账号: \t");
	scanf("%s", login_id);
	printf("请输入密码: \t");
	scanf("%s", login_pw);

	// printf("\n%s\n%s\n", login_id, login_pw);

	if( (strcmp(login_id, "admin") == 0) && (strcmp(login_pw, "8888888") == 0))
	{
		printf("\n管理员账号登录成功!\n");
		admin(L);  //管理员
	}
	else if( (strcmp(login_id, u_id) == 0) && (strcmp(login_id, u_pw) == 0))
	{
		printf("\n普通用户登录成功!\n");
		common_user(L, z);;  //普通用户
	}
	else
	{
		printf("此账号未注册!请先注册!\n");
	}
}

int main()
{
	LinkList L ,USER;  
	InitList(&L); 
	InitList(&USER); 
	printf("\n");
	int flag = 1, nu;
	while(flag)
	{
		printf("\n");
		printf("\t***********************\t\n");
		printf("\t******航班购票系统******\t\n");
		printf("\t****1.注册    2.登录****\t\n");
		printf("\t*********0.退出*********\t\n");
		printf("\t***********************\t\n");

		char num[10];
		scanf("%s",num);

		if (strspn(num, "0123456789") == strlen(num))
		{
			nu = atoi(num);
			switch(nu)
			{
				case 0:
					printf("已退出系统!\n");
					flag = 0;
					break;

				case 1:
					login(user_id, user_pw);  //注册
					break;

				case 2:
					sign(user_id, user_pw, &L, &USER);  //登录
					break;

				default :
					printf("请输入正确的序号!\n");
					break;
			}
		}
		else
		{
			printf("请输入正确的序号!\n");
		}	
	}
}

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