Problem Statement - 08A-2016
Write a program to accept a number and check and display whether it is a Niven number of not. 
(Niven number is that number which is divisible by its sum of digits).
Consider the number 126.
Sum of its digits is 1 + 2 + 6 = 9 and 126 is divisible by 9.
CSKC| Created: 16-Apr-2019 | Updated: 16-Apr-2019|ICSE2016