TO FIND SUM OF GIVEN INTEGER UNTIL WILL GET SINGLE DIGIT WITHOUT USING ANY CONDITIONAL STATEMENT.

# include <stdio.h>
# include <conio.h>
main()
{  int number;
   clrscr();

   printf("enter the value for n
");
   scnaf("%d",&number);

   /* MY FIRST LOGIC*/
   printf("%d",(number-1)%9+1);

   /* MY SECOND LOGIC*/
   printf("%d",9-((18-number%9)/9 * 9));

   /* MY THIRD LOGIC */
   printf("%d",n%9+(9-n%9)/9 * 9);

  getch();
}