#include#include#include#include#include#include#includechar *host_name="127.0.0.1";int port=7778;
struct student
t=;int main ( )
if(connect(socket_descriptor,(void *)&pin,sizeof (pin))==-1)
printf("send message to server .../n");
//memset(buf,0,502);
//memcpy(buf,(void *)&t,sizeof(t));
//sprintf(buf,"%s %d",t.name,t.num);
//printf("the first string : %s/n",buf);
if(send(socket_descriptor,(void *) &t,sizeof(t),0)==-1)
printf("waiting for response from server!/n");
memset(buf,0,502);
if(recv(socket_descriptor,buf,sizeof(buf),0)==-1)
printf("/n response from server : /n");
memcpy((struct student *)&t,buf,sizeof(buf));
//printf("the string : %s /n",rebuf);
printf("--%s--%s--%5.1f--/n",t.name,t.num,t.score);
close (socket_descriptor);
} /* 注意在send 結構體時應該把結構體強制型別轉換為void * 型
** 接受之後又要強制轉換回結構體型！否則則穿過來的是結構體的
** 一部分！
*/下面是服務端
#include#include#include#include#include#includeint port=7778;
struct student
t;main()
bzero(&sin,sizeof(sin));
sin.sin_addr.s_addr=inaddr_any;
sin.sin_port=htons(port);
if(bind(sock_descriptor,(struct sockaddr *)&sin,sizeof (sin))==-1)
if(listen (sock_descriptor,20)==-1)
printf("waiting for accepting connection from client!/n");
while(1)
memset(buf,0,502);
if(recv(temp_sock_descriptor,buf,sizeof(buf),0)==-1)
printf("received : /n");
//printf("the recv buf is :%s/n",buf);
memcpy((struct student *) &t,buf,sizeof(buf));
printf("--%s--%s--%5.1f--/n",t.name,t.num,t.score);
if(send (temp_sock_descriptor,(void *) &t,sizeof(t),0)==-1)
close (temp_sock_descriptor);
}}
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