Thread: error: previous declaration of ‘sys_errlist’ was here

hello,
Here i solve this error used #include <stdio.h> and #include <errno.h> even though gettin this problem.

error: previous declaration of ‘sys_errlist’ was here
what i did mistake here and what is the answer.

Code:

#include <errno.h>

#include <stdio.h>
#include <unistd.h>

#include <netdb.h>

#include <sys/socket.h>

#include <sys/types.h>

#include <netinet/in.h>

#include <rpc/rpc.h>

#include <rpc/xdr.h>

#include <rpc/pmap_prot.h>

#include <rpc/pmap_clnt.h>

#include <rpcsvc/yp_prot.h>

#include <rpcsvc/ypclnt.h>

#include <signal.h>

#include <setjmp.h>



/* xxx: these are sometimes defined by .h files as below for getopt.  I'll

   fix it later... */

extern int errno;

#ifndef BSD4_4

extern char *sys_errlist[];

#endif

#ifndef INADDR_NONE

#define INADDR_NONE 0xffffffff

#endif

Code:

if (!Single)

        if ((rc < 0) && (scan_type == s_tcp) && (errno == ECONNREFUSED))

	  continue;

      if ((rc < 0) && (scan_type == s_udp))

	continue;



      if (scan_type == s_tcp)

         serv = getservbyport(htons(port),"tcp");

      else if (scan_type == s_udp) {

         serv = getservbyport(htons(port),"udp");

	 rc = 0;	/* fake out below msg */

      }

      else 

         return;

      fprintf(stdout,"port &#37;d (%s) %s\n", port,

	(serv == NULL)?"UNKNOWN": serv->s_name,

	(rc == 0) ? "open" : sys_errlist[errno]);

      fflush (stdout);

   }

}