# C# Program to find the sum of digits of a number

In this program, You will learn how to find the sum of digits of a number in C#.

```
201 = 2 + 0 + 1 => 3
193 = 1 + 9 + 3 => 13
```

## Example: How to find the sum of digits of a number in C#.

```
using System;
public class Program
{
public static void Main(string[] args)
{
int n, r, s = 0;
Console.Write("Enter a number:");
n = Convert.ToInt32(Console.ReadLine());
while (n > 0)
{
r = n % 10;
s = s + r;
n = n / 10;
}
Console.WriteLine("Sum of digits:" + s);
}
}
```

#### Output:

```
Enter a number:234
Sum of digits:9
```