linux下用c语言编写局域网聊天工具

/*服务器*/

#include <stdio.h>

#include <stdlib.h>

#include <errno.h>

#include <string.h>

#include <sys/types.h>

#include <netinet/in.h>

#include <sys/socket.h>

#include <sys/wait.h>

#define SERVPORT 5555

#define BACKLOG 10

#define MAX(a,b) ((a)>(b)?(a):(b))

void str_echo(int)

void server()

{

int sockfd,client_fd

struct sockaddr_in my_addr

struct sockaddr_in remote_addr

socklen_t sin_size

if((sockfd=socket(AF_INET,SOCK_STREAM,0))== -1)

{

perror("socket create error!")

exit(1)

}

my_addr.sin_family=AF_INET

my_addr.sin_port=htons(SERVPORT)

my_addr.sin_addr.s_addr=INADDR_ANY

bzero(&(my_addr.sin_zero),8)

if(bind(sockfd,(struct sockaddr *)&my_addr,sizeof(struct sockaddr))==-1)

{

perror("bind error!")

exit(1)

}

if(listen(sockfd,BACKLOG)==-1)

{

perror("listen error!")

exit(1)

}

while(1)

{

sin_size=sizeof(struct sockaddr_in)

if((client_fd=accept(sockfd,(struct sockaddr *)&remote_addr,&sin_size))==-1)

{

perror("accept error!")

continue

}

printf("received a connection from %s\n",inet_ntoa(remote_addr.sin_addr))

if(!fork())

{

close(sockfd)

str_echo(client_fd)

exit(0)

}

close(client_fd)

}

}

void str_echo(int sockfd)

{

int maxfd

char sendbuf[1024]={0}

char recvbuf[1024]={0}

fd_set rfds

while(1)

{

FD_SET(0,&rfds)

FD_SET(sockfd,&rfds)

maxfd=MAX(0,sockfd)+1

select(maxfd,&rfds,NULL,NULL,NULL)

if(FD_ISSET(sockfd,&rfds))

{

bzero(recvbuf,1024)

recv(sockfd,recvbuf,1024,0)

printf("C:%s\n",recvbuf)

}

if(FD_ISSET(0,&rfds))

{

read(0,sendbuf,1024)

send(sockfd,sendbuf,strlen(sendbuf),0)

bzero(sendbuf,1024)

}

}

}

int main()

{

server()

return 0

}

/*客户端*/

#include <stdio.h>

#include <stdlib.h>

#include <errno.h>

#include <string.h>

#include <netdb.h>

#include <sys/types.h>

#include <netinet/in.h>

#include <sys/socket.h>

#define SERVPORT 5555

#define MAXSIZE 1024

#define MAX(a,b) ((a)>(b)?(a):(b))

void client(int argc,char **argv)

{

int sockfd,maxfd

char sendbuf[MAXSIZE]={0}

char recvbuf[MAXSIZE]={0}

// struct hostent *host

struct sockaddr_in serv_addr

fd_set rfds

/* if(argc<2)

{

fprintf(stderr,"Please enter the sserver's name!\n")

exit(1)

}

if((host=gethostbyname(argv[1]))==NULL)

{

herror("get host by name error!\n")

exit(1)

}

*/

if((sockfd=socket(AF_INET,SOCK_STREAM,0))==-1)

{

perror("socket creat error!\n")

exit(1)

}

serv_addr.sin_family=AF_INET

serv_addr.sin_port=htons(SERVPORT)

// serv_addr.sin_addr=*((struct in_addr *)host->h_addr)

serv_addr.sin_addr.s_addr=inet_addr("127.0.0.1")

bzero(&(serv_addr.sin_zero),8)

if(connect(sockfd,(struct sockaddr *)&serv_addr,sizeof(struct sockaddr))==-1)

{

perror("connection error!\n")

exit(1)

}

FD_ZERO(&rfds)

while(1)

{

FD_SET(0,&rfds)

FD_SET(sockfd,&rfds)

maxfd=MAX(0,sockfd)+1

select(maxfd,&rfds,NULL,NULL,NULL)

if(FD_ISSET(sockfd,&rfds))

{

bzero(recvbuf,MAXSIZE)

recv(sockfd,recvbuf,MAXSIZE,0)

printf("S:%s\n",recvbuf)

}

if(FD_ISSET(0,&rfds))

{

fgets(sendbuf,MAXSIZE,stdin)

send(sockfd,sendbuf,strlen(sendbuf),0)

bzero(sendbuf,MAXSIZE)

}

}

// close(sockfd)

}

int main(int argc,char **argv)

{

client(argc,argv)

return 0

}

GTK是C++类库吧，怎么用C语言来写界面，你老师脑残了啊

你可以去问候他老母或者自己找下GTK的资料，socket是关键，多线程和并发什么的，不要偷懒，不然出来工作就跟个傻瓜一样了

用指针数组啦 例如 ：GtkWidget *btn[10]

一下例子为：3x3 按钮

#include <gtk/gtk.h>

int main(int argc, char *argv[])

{

 GtkWidget *window

 GtkWidget *table

 GtkWidget *button[9]

 int i

 int j

 

 gtk_init(&argc, &argv)

 window = gtk_window_new(GTK_WINDOW_TOPLEVEL)

 g_signal_connect(G_OBJECT(window), "delete_event",

   G_CALLBACK(gtk_main_quit), NULL)

   

 gtk_window_set_title(GTK_WINDOW(window), "控件数组")

 gtk_window_set_default_size(GTK_WINDOW(window), 500, 500)

 gtk_window_set_position(GTK_WINDOW(window), GTK_WIN_POS_CENTER) 

 gtk_container_set_border_width(GTK_CONTAINER(window), 40)

 

 table = gtk_table_new(3, 3, FALSE)

 gtk_container_add(GTK_CONTAINER(window), table)

 for(i=0i<3i++)

 {

  for(j=0j<3j++)

  {

   char buf[256] = ""

   sprintf(buf, "按钮%d\0", i*3+j+1)

   button[i*3+j] = gtk_button_new_with_label(buf)

   gtk_table_attach_defaults(GTK_TABLE(table), button[i*3+j], j, j+1, i,i+1)

  }

 }

 

 gtk_widget_show_all(window)

 gtk_main()

 return FALSE

}

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