cli_xxf.c

基于终端的订花系统_socket #include<stdio.h> #include<stdlib.h> #include<errno.h> #inclu

#include<stdio.h>
#include<stdlib.h>
#include<errno.h>
#include<netdb.h>
#include<string.h>
#include<sys/types.h>
#include<netinet/in.h>
#include<sys/socket.h>
#define PORT 3490
#define ITEM_NUM 50
#define MAXDATASIZE  5000
struct flower
{
	int seri;
	char name[20];
	int price;
	int n_sold;
	int n_store;
};
struct flower *g;
int n,i;
struct search
{
	int seri;
	int num;
};
struct search s;
void go_out();
void scanf_pro();
void book();
void unbook();

int main(int argc,char **argv)
{
	int sockfd,nbytes;
	struct hostent *he;
	struct sockaddr_in srvaddr;
	if(argc!=2)
	{
		perror("Usage:client hostname\n");
		exit(1);
	}
	if((he=gethostbyname(argv[1]))==NULL)
	{
		perror("gethostbyname");
		exit(1);
	}
	if((sockfd=socket(AF_INET,SOCK_STREAM,0))==-1)
	{
		perror("create socket error");
		exit(1);
	}
	
	bzero(&srvaddr,sizeof(srvaddr));
	srvaddr.sin_family=AF_INET;
	srvaddr.sin_port=htons(PORT);
	srvaddr.sin_addr=*((struct in_addr *)he->h_addr);
	
	if(connect(sockfd,(struct sockaddr *)&srvaddr,sizeof(struct sockaddr))==-1)
	{
		perror("connect error");
		exit(1);
	}else printf("connect successfully...\n");
	printf("*************** Welcome to hm's flower shop ***********\n"); 
	
	do{
		printf("*********************************************\n"
				"choose the service:\n"
		"1,press 1 to browse the info of flowers\n"
		"2.press 2 to book flowers\n"
		"3.press 3 to unbook flowers\n"
		"3,press 0 to quit\n"
		"***********************\n");
	scanf("%d",&n);
	switch(n) 
	{
		case 1:scanf_pro(sockfd);break;
		case 2:book(sockfd);break;
		case 3:unbook(sockfd);break;
		case 0:go_out(sockfd);
	}
	}while(1);
}
//////////////
void go_out(int sockfd)
{
	int option=0;
	write(sockfd,&option,4);
	close(sockfd);
	exit(0);
}

       	
void scanf_pro(int sockfd)
{
		int n_bytes;
		int option=1,item_num;
		struct flower t;
		n_bytes = send(sockfd,&option,4,0);
		read(sockfd,&item_num,4);
		if( n_bytes <= 0)
		 {
		        perror("send error\n");exit(0);
		 }
		
		printf("seri      name     price   n_sold		n_store\n");				
		for(i=0;i<item_num;i++)
		 {
			if((n_bytes=read(sockfd,&t,sizeof(struct flower)))==-1)
			{
				perror("read error\n");
				exit(0);
			}else	printf("%d%12s%12d%12d%12d\n",t.seri,t.name,t.price,t.n_sold,t.n_store);
		}	
}

void book(int sockfd)
{
	int option=2;
	write(sockfd,&option,4);
   printf("input the flower info as follow: seri  number(you unbook) \n");	
	scanf("%d%d",&s.seri,&s.num);
	int nbytes;
	nbytes = write(sockfd,&s,sizeof(struct search));
	if( nbytes <= 0)   
	{             
	        perror("send struct search error\n");exit(0);       
	}
   char buf[1024];  
 	nbytes = read(sockfd,buf,1024); 
 	if(nbytes <= 0)
	{        
	perror("receive error\n");
	exit(0);    
	}
	buf[nbytes]='\0'; 
	printf("%s\n",buf);
}

void unbook(int sockfd)
{
	int option=3;
	write(sockfd,&option,4);
   printf("input the flower info as follow: seri  number(you unbook) \n");	
	scanf("%d%d",&s.seri,&s.num);
	int nbytes;
	nbytes = write(sockfd,&s,sizeof(struct search));
	if( nbytes <= 0)   
	{             
	        perror("send struct search error\n");exit(0);       
	}
   char buf[1024];  
 	nbytes = read(sockfd,buf,1024); 
 	if(nbytes <= 0)
	{        
	perror("receive error\n");
	exit(0);    
	}
	buf[nbytes]='\0'; 
	printf("%s\n",buf);
}