Return PGresult

Hi,
PGresult is a structure.
I want to return PGresult pointer.(Code is given below.)
Is this possible ? if yes , please give me the solution.
Thanks in Advance.
Anuj
===========================
/* tempdb=>create table tbltemp (id int4, name varchar(30)); */
#include <stdio.h>
#include <pgsql/libpq-fe.h>

main()
{
    int totalrec;
    PGresult *resu;
    dbQuery("tempdb","select * from tbltemp",&totalrec,resu);
    printf("\n The total rec  = %i\n", totalrec);
    printf(" The total rec  = %i\n",  PQntuples(resu));
} /* End of main */

 dbQuery(char * dbName, char *sqlstatement , int *totalrec,PGresult *res)
 {
      PGconn     *conn;
      char fullsql[500];
      conn = PQsetdb(NULL, NULL, NULL, NULL, dbName);
      res = PQexec(conn, "BEGIN");
      PQclear(res);
      strcpy(fullsql , "DECLARE mycursor CURSOR FOR ");
      strcat(fullsql,sqlstatement);
      res = PQexec(conn, fullsql);
      PQclear(res);
      res = PQexec(conn, "FETCH ALL in mycursor");
      *totalrec = PQntuples(res);
 }
===========================

Out put :
$
The total rec  = 2 // This result is right.
The total rec  = 0 // The same result is not showing.
$