tcp_linux program in c

tcp_server.c

#include<stdio.h>
#include<stdlib.h>
#include<unistd.h>
#include<string.h>
#include<sys/socket.h>
#include<sys/types.h>
#include<arpa/inet.h>
int main()
{
  int sid,new_sid;
  char buffer[100];
  pid_t child;
  struct sockaddr_in s,new_s;
  int size_of_new_s=sizeof(new_s);
  sid=socket(AF_INET,SOCK_STREAM,0);
  if(sid<0)
  {
   printf("[+]Error in socket creation :\n");
   exit(1);
  }
  printf("socket created:\n");
  s.sin_family=AF_INET;
  s.sin_port=htons(6666);
  s.sin_addr.s_addr=inet_addr("127.0.0.1");
  if(bind(sid,(struct sockaddr *)&s,sizeof(s))<0)
  {
   printf("[+]Error in binding: \n ");
   exit(1);
  }
  printf("Binding with port is Completed: \n");
  if(listen(sid,10)==0)
  {
   printf("listening.............\n");
  }
  else
   printf("[+]error in listening: \n");
  
  while(1)
  {
   new_sid=accept(sid,(struct sockaddr*)&new_s,&size_of_new_s);
   if(new_sid<0)
   {
   //printf("Error in connection acception :\n");
   exit(1);
   }
  printf("connection is established with %s:%d \n",inet_ntoa(new_s.sin_addr),ntohs(new_s.sin_port));
  if((child=fork())==0)
  {
   close(sid);
 
  while(1)
  {
   recv(new_sid,buffer,100,0);
   if(strcmp(buffer,"exit")==0)
   {
    printf("Disconnected from %s:%d \n",inet_ntoa(new_s.sin_addr),ntohs(new_s.sin_port));
    break;
   } 
   else
   {
   printf("\n Client of port No://%d//  : %s \n",ntohs(new_s.sin_port),buffer);
   //printf("\n massge to Client of port No://%d//  :",ntohs(new_s.sin_port));
    //scanf("%s",buffer);
   send(new_sid,buffer,100,0); 
   bzero(buffer,sizeof(buffer));
   }
  }
  }
 }  
 close(new_sid);
}

tcp_client.c

#include<stdio.h>
#include<sys/types.h>
#include<stdlib.h>
#include<sys/socket.h>
#include<arpa/inet.h>
#include<unistd.h>
#include<string.h>
int main()
{
 int sid;
 struct sockaddr_in s;
 //nsz=sizeof(ns);
 char buffer[100];
 sid=socket(AF_INET,SOCK_STREAM,0);
 pid_t pid;
 if(sid<0)
 {
  printf("[-]Error in socket Creation:\n");
  exit(0);
 }
  printf("[+]SOcket created:\n");
  s.sin_family=AF_INET;
  s.sin_port=htons(6666);
  s.sin_addr.s_addr=inet_addr("127.0.0.1");
  if(connect(sid,(struct sockaddr*)&s,sizeof(s))<0)
  {
   printf("[-]Error in Connection:\n");
   exit(1);
  }
  printf("[+]Connection completed:\n");
  
  while(1)
  {
   
    printf("\nClient:");
    scanf("%s",buffer);
     send(sid,buffer,100,0);
     if(strcmp(buffer,"exit")==0)
     {
      //printf("Disconnected from:%s : %d",inet_ntoa(ns.sin_addr),ntohs(ns.sin_port));
      close(sid);
      break;
     } 
     //printf("\nClient port: %d::%s",ntohs(ns.sid_port),buffer);
     bzero(buffer,sizeof(buffer));
     
   
  }
}