#include<stdio.h>
#include<sqlca.h>
#include<oraca.h>
void main()
{
  EXEC SQL BEGIN DECLARE SECTION;
  int diff;
  EXEC SQL END DECLARE SECTION;
  EXEC SQL select trim(to_date('20101003','yyyymmdd')-to_Date('20091003','yyyymmdd')) into :diff from dual;
  printf("\n The difference value is %d \n",diff);
}