public class charArith
{
   public static void main(String[] args)
   {
      int  i;

      i = '0';
      System.out.println("i = " + i);

      i = '0' + 1;
      System.out.println("i = " + i);
      
      i = '1' - '0';
      System.out.println("i = " + i);
   }
}