Write a program to read ONLY one integer number (your input must be one 
  3 digit number from 100 to 999), and to think of a number as being ABC
  (where A, B, and C are the 3 digits of a number). Now, form  the  number
  to become ABC,BCA, and CAB, then find out the remainder of  these three
  numbers when they are divided by 11. Assume remainders would  respectively
  be X, Y, and Z  and  add  them  up  as  X+Y, Y+Z, and  Z+X. Now if any  of
  these summations is odd number, increase it by 11 if the summation plus 11
  is less than 20, otherwise  decrease the  summation  by 11 (this summation
  operation must  be positive  number but  less than 20). Finally, divide
  each of the sums in half. Now, print out all the resulting digits.