Q.11: How to find the sum of digits of a positive integer?

 Ans.: The user will input a positive integer and the method should return the sum of all the digits in that integer.

• input: 168, output: 15

internal static void SumOfDigits(int num)

{

int sum = 0;

while (num > 0)

{

sum += num % 10;

num /= 10;

}

Console.WriteLine(sum);

}