#include<stdio.h>#include<string.h>#include<stdlib.h>#include<sys/socket.h>#include<sys/types.h>#include<netdb.h>#include<netinet/in.h>int main(void){    int client_socket;  struct sockaddr_in sever_addr;   char rec[100];  bzero(&sever_addr,sizeof(struct sockaddr_in));  sever_addr.sin_family=AF_INET;  sever_addr.sin_addr.s_addr=inet_addr("192.168.0.23");  sever_addr.sin_port=htons(7000);   if((client_socket=socket(AF_INET,SOCK_STREAM,0))==-1)   {     printf("socket is error!\n");     exit(1);   }     if(connect(client_socket,(struct sockaddr*)(&sever_addr),sizeof(struct sockaddr))==-1)   {     printf("client connect is error!\n");     exit(1);   }     read(client_socket,rec,100,0);  printf("%s\n",rec);   printf("receive from server is successful!\n");    write(client_socket,"this is client send",strlen("this is client send")+1,0);    printf("send data to server is successful!\n");    close(client_socket);   }