C# Program to Find the Sum of Digits in a Given Number

Here you will find an algorithm and program in C# programming language to find the sum of digits in number. Now let us understand this.
Explanation : Suppose we are having number 12548 and we have to calculate the sum of digits in the given number, so here we have the following digits 1, 2, 5, 4, 8 and we will sum all these digits -> 1 + 2 + 5 + 4 + 8 and the result we get is 20 that will be our output.
Sum Of Digits Algorithm
 
START
Step 1: Get number by user
Step 2: Get the modulus/remainder of the number
Step 3: sum the remainder of the number
Step 4: Divide the number by 10
Step 5: Repeat the step 2 while number is greater than 0.
STOP

C# Program to Find the Sum Of Digits in Number
 
using System; 
class LFC { 
static int sum_digit(int num) 
{ 
int sum = 0,rem; 
while (num != 0) { 
 rem=num%10;
 num = num / 10; 
 sum=sum+rem; 
 } 
return sum; 
}
public static void Main() 
{ 
 int num = 123456; 
 Console.WriteLine("Sum Of"
 + " Digits : " + sum_digit(num)); 
} 
} 
 
Output
Sum Of Digits : 21