C language course design -- hotel management system

Course design topic ： Hotel Management System
One 、 Demand analysis
In recent years , Scientific and technological progress has not only promoted the rapid growth of global tourism enterprises , It also guides tourists' consumption concept to update , Among them, the development of information and communication technology has a far-reaching impact on hotels and other enterprises , The traditional way of management is no longer It can meet the requirements of having a large amount of information , A lot of queries , Long shelf life , Requirements for hotel management with uninterrupted operation and other characteristics , Attaching importance to the development of information technology has become the consensus of China's hotel industry . To enhance competitiveness , Improve the management level , advanced Hotel management system has become inevitable . Hotel management system can timely understand customer information and needs , Realize Hotel Management Promotion of information technology , The implementation of hotel management system can gradually improve the modernization of hotels , Improve employee productivity , A good management system increasingly establishes a good image of the service department , It is conducive to business standardization , Standardization , advantageous to Improve the management level , It is conducive to creating higher economic and social benefits , Modernize the management process .
Two 、 overall design

3、 ... and 、 Detailed design
This system mainly realizes the establishment of customer information , lookup , Delete and other functions . The main menu of the system is generated by the main function ,
Provide access to various interfaces . Mainly for SWITCH Switch statements enter different interfaces , Input “1” Entry guest
Library information establishment interface , Input “2” Enter the information adding interface , Input “3” Enter the customer name query interface , transport
Enter into “4” Enter the customer gender query interface , Input “5” Enter the room number query interface . Input “6” When entering the check-in
Inter query interface , Input “7” Enter the customer information modification interface , Input “8” Enter the customer information deletion interface , transport
Enter into “9” Enter the customer information deletion interface , Input “0” Exit the system . Procedure by C Language combined with data structure
Set up a linear linked list of knowledge programming
Four 、 Debugging and testing
5、 ... and 、 User's Manual
1. Enter... In the main menu “1” Get into “ Hotel information establishment interface ”. This interface can establish
Basic information of customers ： full name , Gender , Id no. , Check in time , Days , room number , Pledge
gold , Departure time, etc , And return to the main menu .
2. Hotel information add function
Enter... In the main menu “2” Get into “ Hotel information adding interface ”. This interface can add
Number of customers and basic information of customers ： full name , Gender , Id no. , Check in time , Days ,
room number , The deposit , Departure time, etc , And return to the menu for the next step .
3. Customer name inquiry function
Enter... In the main menu “3” Get into “ Customer name query interface ”. In this interface, first root
Enter 1 Means to search by name , Then enter the customer name and confirm to query the customer
The basic information of the user is displayed . This function can easily query customers with a certain name
Room information .
4. Customer gender inquiry function
Enter... In the main menu “4”, Get into “ Customer gender query interface ”. In this interface, you can press customer
The gender of the customer queries the basic information of all customers of a certain gender , This function can query the same
Gender guest information , And compare different passenger flows , Plan to increase passenger flow .

5. Hotel room number inquiry function
Enter... In the main menu “5”, Get into “ Hotel room number query interface ”. In this interface, you can press already
Know the room number to query the basic information of customers , This function can determine the occupancy of a room ,
If there is no one, there is no room information , If someone lives in, it can be based on the previously established or added
The customer information shows the registration information of the guests living in the room .
6. Check in time query function
Enter... In the main menu “6”, Get into “ Check in time query interface ”. In this interface, you can
Check the basic information of customer registration through the approximate check-in time , This function can be queried in the same
Guests who stay in the hotel for a day
7. Customer information modification function
Enter... In the main menu “7”, Get into “ Customer information modification interface ”. In this interface, first
Find the customer information through the previous customer name , Then according to the customer name to be modified ,
Modify customer information . This function is convenient for customers who need to increase their accommodation time
guard .
8. Customer information deletion function
Enter... In the main menu “8”, Get into “ Customer information deletion interface ”. In this interface
You can delete the basic information of the customer by the customer's name , Use del（） function , Enter the customer
full name , OK to delete, press 1, This function can be saved for a long time, and now it does not need to be preserved
Delete the information of the customer .
9. Customer information display function
Enter... In the main menu “9”, Get into “ Customer information display interface ”. In this interface
The basic information of customers can be queried according to their gender , This function can display all customer information
Displayed on the output interface , Staff can observe directly .
6、 ... and . Source code

#include"stdio.h"
#include"stdlib.h" 
#include"string.h"
typedef struct
{
	char name[50];  
	char sex[50]; 
	char ID[50];
	char come[50];  
	char day[50];
	char number[50]; 
	char type[50];
	char price[50];  
	char yushou[50];
	char yajin[50];  
	char leave[50];
}datatype;
typedef struct node
{
	datatype data;  
	struct node *next; 
}listnode; 
typedef listnode *linklist;
linklist head;
listnode *p;
void Output_allInfo(linklist head);// Output all customer information   
void Delete_info(linklist head);// Deletion of customer information  
void Info_Modify(linklist head);// Modify according to the information of the customer's name  
listnode *Name_Search(linklist head); // Find hotel information by name  
listnode *Sex_Search(linklist head);// Find hotel information by gender   
listnode *Roomnum_Search(linklist head);// Find hotel information by room number 
listnode *Cometime_Search(linklist head) ;// Find by check-in time  
char Display_Menu();// Menu output function  
listnode* Add(linklist head,int b);// Add customer information 
linklist Create(int a);// Establishment of hotel customer information   
void SaveInfoToFile(linklist head);// Save customer information to file 
listnode *ReadInfoFromFile();// Information is read from the file 
int main()// The main function  
{ 
	int i,a;
	for(;;) 
	{ 
		switch(Display_Menu())  
		{
		case 1: printf("**2. Establishment of hotel information **\n");           
			printf(" Enter the number you want to enter ：");         
			scanf("%d",&i);       head=Create(i); break;  
		case 2: printf("**1. Read the customer information from the file ！**\n");        
			ReadInfoFromFile();             break;      
		case 3: printf("**3. Add hotel information **\n");          
			printf(" Enter the number of people you want to add ：");       
			scanf("%d",&a);       
			Add(head,a); break; 
		case 4:  printf("**4. Inquiry of customer name **\n");        
			p=Name_Search(head);             if(p!=NULL)       
			{       
				printf(" full name \t  Gender \t  certificates \t  To stay in \t  Days \t  room number \t  Price \t  The deposit \t  Leave \n ");     
				printf("%s\t%s\t%s\t%s\t%s\t%s\t%s\t%s\t%s\n",p->data.name,p->data.sex,p->data.ID,      
					p->data.come,p->data.day,p->data.number,p->data.price,p->data.yajin,p->data.leave );      
				printf("\n");  
			} 
			else printf(" The user does not exist ！");break;       
		case 5: printf("**5. Inquiry of customer gender **\n");    
			p=Sex_Search(head);          
			if(p!=NULL)         
			{
				printf(" full name \t  Gender \t  certificates \t  To stay in \t  Days \t  room number \t  Price \t  The deposit \t  Leave \n ");   
				printf("%s\t%s\t%s\t%s\t%s\t%s\t%s\t%s\t%s\n",p->data.name,p->data.sex,p->data.ID,    
					p->data.come,p->data.day,p->data.number,p->data.price,p->data.yajin,p->data.leave );      
				printf("\n");   
			}
			else
				printf(" The user does not exist ！");break;  
		case 6: 
			printf("**6. Inquiry of customer's room number **\n");     
			p=Roomnum_Search(head);     
			if(p!=NULL)  
			{
				printf(" full name \t  Gender \t  certificates \t  To stay in \t  Days \t  room number \t  Price \t  The deposit \t  Leave \n ");   
				printf("%s\t%s\t%s\t%s\t%s\t%s\t%s\t%s\t%s\n",p->data.name,p->data.sex,p->data.ID, 
					p->data.come,p->data.day,p->data.number,p->data.price,p->data.yajin,p->data.leave );   
				printf("\n");     
			}
			else printf(" The room information does not exist ！");break; 
		case 7:
			printf("**7. Inquiry of customer gender **\n");    
			p=Cometime_Search(head);
			if(p!=NULL)   
			{
				printf(" full name \t  Gender \t  certificates \t  To stay in \t  Days \t  room number \t  Price \t  The deposit \t  Leave \n ");    
				printf("%s\t%s\t%s\t%s\t%s\t%s\t%s\t%s\t%s\n",p->data.name,p->data.sex,p->data.ID,
					p->data.come,p->data.day,p->data.number,p->data.price,p->data.yajin,p->data.leave );    
				printf("\n");  
			}    
			else printf(" The room information does not exist ！");break;
		case 8: printf("**8. Modification of hotel information **\n");         
			Info_Modify(head);break; 
		case 9: printf("**9. Deletion of hotel information **\n"); 
			Delete_info(head);break;   
		case 10: printf("**10. Output of hotel information **\n");    
			Output_allInfo(head); break;  
		case 11:printf("11. Keep customer information ");      
			SaveInfoToFile(head); break;
			// Save customer information to file    
		case 0:printf("**0. sign out **\n");     
			exit(0);   
		default: break; 
		} 
	}
	return 0; 
}
// Menu functions  
char Display_Menu() 
{  
	int  i;  
	FILE *fp;
	char ch; 
	printf("\n\n\n\n\n\n");
	printf("                          Welcome to the hotel information management system ！") ;   
	if((fp=fopen("F:\\Cyy Report\\menu.txt","r"))==NULL) 
	{
		printf(" Failed to open menu file ！");  
		exit(0);  
	} 
	ch=fgetc(fp);
	while(ch!=EOF) 
	{
		putchar(ch); 
		ch=fgetc(fp);
	}
	printf("\n");
	for(;;)  
	{ 
		scanf("%d",&i); 
		printf("\n");  
		if(i<0||i>11) 
			printf(" Wrong choice , To choose ：\n");   
		else break;
	}   
	return i;
}
listnode *ReadInfoFromFile() 
{ 
	FILE *fp;  
	int b; 
	fp=fopen("F:\\Cyy Report\\customer.txt","r");  
	listnode *p=NULL,*q=NULL,*head=NULL;
	p=(listnode *)malloc(sizeof(listnode));   
	head->next=p;     
	b=1;
	if(!fp)  
	{
		printf(" File opening failure ！");  
		exit(0); 
	}
	else printf(" File opened successfully ");  
	while(!feof(fp)) 
	{  
		/*fprintf(fp,"%s\t%s\t%s\t%s\t%s\t%s\t%s\t%s\t%s\n",p->next->data.name,p->next->data.se x,p->next->data.ID,          p->next->data.come,p->next->data.day,p->next->data.number,p->next->data.price,p->next->data. yajin,p->next->data.leave );*/  
		q=(listnode *)malloc(sizeof(listnode));   
		fscanf(fp,"%s%s%s%s%s%s%s%s",p->data.name,p->data.sex,p->data.ID,   
			p->data.come,p->data.day,p->data.number,p->data.price,p->data.yajin,p->data.leave); 
		p->next=q;
		q=p ;
		b++;
	}
	head=Add(head,b); 
	printf("\n"); 
	fclose(fp);  
	return head; 
}
// Establishment of hotel customer information  
linklist Create(int a)
{
	linklist head=(listnode *)malloc(sizeof(listnode));
	listnode *p,*q;  
	q=head;
	while(a--) 
	{
		p=(listnode *)malloc(sizeof(listnode)); 
		printf(" full name \t  Gender \t  certificates \t  To stay in \t  Days \t  room number \t  Price \t  The deposit \t  Leave \n "); 
		scanf("%s%s%s%s%s%s%s%s%s",p->data.name,p->data.sex,p->data.ID,   
			p->data.come,p->data.day,p->data.number,p->data.price,p->data.yajin,p->data.leave); 
		q->next=p;   
		q=p; 
	} 
	q->next=NULL; 
	return head; 
}
listnode* Add(linklist head,int b)// Add customer information  
{
	listnode *m,*n,*p;
	m=head;
	n=m->next;  
	while(n->next!=NULL)
	{
		m=n;  
		n=n->next; 
	}
	while(b--) 
	{
		p=(listnode *)malloc(sizeof(listnode));   
		printf(" full name \t  Gender \t  certificates \t  To stay in \t  Days \t  room number \t  Price \t  The deposit \t  Leave \n "); 
		printf("***************************\n"); 
		scanf("%s%s%s%s%s%s%s%s%s",p->data.name,p->data.sex,p->data.ID,        
			p->data.come,p->data.day,p->data.number,p->data.price,p->data.yajin,p->data.leave );  
		n->next=p;
		n=p; 
	}
	n->next=NULL; 
	return head; 
}
// Find hotel information by name  
listnode *Name_Search(linklist head) 
{
	listnode *p;  
	char name[10];
	int i;  
	printf(" Press  1  Indicates name search ：");  
	p=head->next ; 
	scanf("%d",&i);  
	if(i==1) 
	{
		printf(" Enter the name you want to query ：");  
		scanf("%s",&name);
		while(p&&strcmp(p->data.name,name)>0)   
			p=p->next;   
		if(p==NULL||strcmp(p->data.name,name)<0)
			p=NULL;
	}
	else
		printf(" Input error ！");  
	return p;
}
// Find hotel information by gender   
listnode *Sex_Search(linklist head)
{
	listnode *p; 
	char sex[10];
	int i;  
	printf(" Press  1  Indicates gender search ：");  
	scanf("%d",&i);
	p=head->next ;  
	if(i==1)  
	{
		printf(" Enter the gender to query ：");  
		scanf("%s",&sex); 
		while(p&&strcmp(p->data.sex,sex)>0)
			p=p->next; 
		if(p==NULL||strcmp(p->data.sex,sex)<0) 
			p=NULL;  
	}
	return p; 
}
// Find hotel information by room number   
listnode *Roomnum_Search(linklist head)
{
	listnode *p;
	char number[10]; 
	int i;
	printf(" Press  1  Indicates room number search ：");  
	p=head->next ;
	scanf("%d",&i);
	if(i==1)  
	{
		printf(" Enter the room number to query ：");   
		scanf("%s",&number);
		while(p&&strcmp(p->data.number,number)>0)  
			p=p->next; 
		if(p==NULL||strcmp(p->data.number,number)<0)  
			p=NULL; 
	}
	return p; 
}
// Find by check-in time  
listnode *Cometime_Search(linklist head) 
{
	listnode *p; 
	char come[10]; 
	int i;  
	printf(" Press  1  Indicates gender search ：");  
	p=head->next ;
	scanf("%d",&i); 
	if(i==1) 
	{
		printf(" Enter the check-in time to query ：");  
		scanf("%s",&come); 
		while(p&&strcmp(p->data.come,come)>0) 
			p=p->next;  
		if(p==NULL||strcmp(p->data.come,come)<0)
			p=NULL; 
	}
	return p; 
}
// Modify according to the information of the customer's name   
void Info_Modify(linklist head) 
{  
	listnode *p;
	p=Name_Search(head);
	if(p==NULL)
	{ 
		printf(" Hotel information does not exist ！\n");  
	}  
	else
	{
		printf(" full name \t  Gender \t  certificates \t  To stay in \t  Days \t  room number \t  Price \t  The deposit \t  Leave \n ");
		printf("***************************\n");   
		scanf("%s%s%s%s%s%s%s%s%s",p->data.name,p->data.sex,p->data.ID,       
			p->data.come,p->data.day,p->data.number,p->data.price,p->data.yajin,p->data.leave );  printf(" Hotel information has been modified ！");    
	}
}
// Deletion of customer information 
void Delete_info(linklist head) 
{
	int i;  
	listnode *p,*q; 
	p=Name_Search(head);  
	if(p==NULL) 
	{
		printf(" Information does not exist ！\n");   
		return;  
	}  
	else 
	{
		printf(" Press  1  Delete ：");   
		scanf("%d",&i);
		if(i==1) 
		{
			q=head;
			while(q!=NULL&&q->next!=p)  
				q=p->next;
			q->next=p->next; 
			free(p); 
			printf(" The message has been deleted ！");    
		}
	}
}
// Output of hotel information  
void Output_allInfo(linklist head) 
{
	listnode *p; 
	p=head;  
	printf(" full name \t  Gender \t  certificates \t  To stay in \t  Days \t  room number \t  Price \t  The deposit \t  Leave \n "); 
	while(p->next!=NULL)  { 
		
		printf("%s\t%s\t%s\t%s\t%s\t%s\t%s\t%s\t%s\n",p->next->data.name,p->next->data.sex,p-> next->data.ID,      
			p->next->data.come,p->next->data.day,p->next->data.number,p->next->data.price,p->next->data. yajin,p->next->data.leave ); 
		p=p->next ;
	}
}
void SaveInfoToFile(linklist head) 
{ 
	FILE *fp;
	listnode *p; 
	p=head->next; 
	if(p==NULL) 
	{ 
		printf(" There is no customer information now , Please enter the customer information first ！\n\n"); 
		return; 
	}
	fp=fopen("F:\\Cyy Report\\customer.txt","w");  
	if(!fp) 
	{ 
		printf(" file does not exist ！\n");
		return;
	}
	while(p)  
	{
		fprintf(fp,"%s\t%s\t%s\t%s\t%s\t%s\t%s\t%s\t%s\n",p->data.name,p->data.sex,p->data.ID,      p->data.come,p->data.day,p->data.number,p->data.price,p->data.yajin,p->data.leave );     
		p=p->next; 
	}  
	fclose(fp);  
	printf(" File saved successfully ！\n"); 
}