irc client in c

Ok i created this irc bot( finaly got it working ) but i have one problem... when i want to get a certain input let's say.. hey
then i want it to say you, but for some reason i have to send this PRIVMSG #coding hey
to get this PRIVMSG #h4ckerx :you

but i just want to get the word hey etc and make my bot say you with out me writing PRIVMSG #coding hey in the chan.. another thing is.. that if i was to kick my bot, the connection is still running.. like if i was to try to join again with the same bot name i will get an error( nick all ready in use ) any help?

Code:

---


 mysock.sin_family = AF_INET;
    mysock.sin_port = htons( port );
    mysock.sin_addr = *((struct in_addr *)host->h_addr);
   
    memset(&(mysock.sin_zero), '\0', 8);
    system( "clear" );
   
    printf( "-- Looking up %s...\n", argv[1] );
    printf( "-- Connecting to %s (%s) port %s\n",host->h_name, inet_ntoa(*(struct in_addr *)host->h_addr ), argv[2] );
    printf( "-- Connected. Now logging in..\n" );
    if(cc = connect( sp, ( struct sockaddr *)&mysock, sizeof mysock) == -1 )
    {
        perror( "connect" );
        exit( 1 );
    }
   
    sleep(1);
   
        sendargv(sp,"NICK Gost\n\r");
        sendargv(sp,"USER localhost localhost localhost : gost\n\r");
        sendargv(sp,"JOIN #code\n\r");
        sendargv(sp,"USER localhost:gost\n\r");
       
    for( ;; )
    {
        recv(sp, buff, sizeof(buff), 0 );
        if(buff[strlen(buff)-1] == '\n')
       
            buff[strlen(buff)-1] = '\0';
       
        if (strstr(buff, "474"))
                        // if bot is banned do this.
        if(strstr(buff, "433"))
            sendargv(sp,"NICK BOT\r\n" );
        if(strstr(buff, "PRIVMSG:"))
         
          if(strstr( buff, "PRIVMSG #code hey" ))
            sendargv( sp, "PRIVMSG #code :you\r\n" );
       
       
        if(strstr(buff, "PING :"))
        {
          fprintf(stdout,"[$] PING! sending PONG.\n");
          ping = strtok(buff,"PING:");
          sendargv(sp,"PONG :%s\n\r", ping);
        }

        fprintf(stdout, "-- %s\n", buff);
        memset(buff, 0, sizeof(buff));

    }
   
    close( sp );
    return 0;
  }

int sendargv( int s, char *text, ... )
{ 
    static char buff[1024];
    va_list ap;
    va_start(ap, text);
    vsprintf(buff, text, ap);
    va_end( ap );
   
    return write(s,buff, strlen(buff));
}

---