struct sqlda * descriptor_name

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
EXEC SQL INCLUDE SQLCA;
#include "sqldef.h"
EXEC SQL BEGIN DECLARE SECTION;
int         x;
short       type;
int         numcols;
char        string[100];
a_SQL_statement_number  stmt = 0;
EXEC SQL END DECLARE SECTION;
int main(int argc, char * argv[]){
   struct sqlda *      sqlda1;
   if( !db_init( &sqlca ) ) {
      return 1;
   }
   db_string_connect( &sqlca,
   "UID=dba;PWD=sql;DBF=d:\\DB Files\\sample.db");
   EXEC SQL ALLOCATE DESCRIPTOR sqlda1 WITH MAX 25;
   EXEC SQL PREPARE :stmt FROM
      'SELECT * FROM Employees';
   EXEC SQL DECLARE curs CURSOR FOR :stmt;
   EXEC SQL OPEN curs;
   EXEC SQL DESCRIBE :stmt into sqlda1;
   EXEC SQL GET DESCRIPTOR sqlda1 :numcols=COUNT;
   // how many columns?
   if( numcols > 25 ) {
      // reallocate if necessary
      EXEC SQL DEALLOCATE DESCRIPTOR sqlda1;
      EXEC SQL ALLOCATE DESCRIPTOR sqlda1
         WITH MAX :numcols;
      EXEC SQL DESCRIBE :stmt into sqlda1;
   }
   type = DT_STRING; // change the type to string
   EXEC SQL SET DESCRIPTOR sqlda1 VALUE 2 TYPE = :type;
   fill_sqlda( sqlda1 );
   // allocate space for the variables
   EXEC SQL FETCH ABSOLUTE 1 curs
      USING DESCRIPTOR sqlda1;
   EXEC SQL GET DESCRIPTOR sqlda1
      VALUE 2 :string = DATA;
   printf("name = %s", string );
   EXEC SQL DEALLOCATE DESCRIPTOR sqlda1;
   EXEC SQL CLOSE curs;
   EXEC SQL DROP STATEMENT :stmt;
   db_string_disconnect( &sqlca, "" );
   db_fini( &sqlca );
   return 0;
}