3. C program to determine whether the given number is a Harshad Number.
If a number is divisible by the sum of its digits then it will be known as a Harshad Number.
The number 156 is divisible by the sum (12) of its digits (1, 5, 6 ).
Some Harshad numbers are 8, 54, 120 etc.
In this program, integer value is predefined, we don't need to put integer value to determine whether the given number is a Harshad number or not by following the algorithm as given below:
156 is a harshad number