# Function SumDigits - Practice Exercises C# Sharp

## Lesson 5:

## Functions

## Exercise 5.17:

## Function SumDigits

## Objetive:

##
Create a function SumDigits that receives a number and returns any results in the
sum of its digits. For example, if the number is 123, the sum would be 6.

Console.Write( SumDigits(123) );

6

## Source Code:

```
using System;
public class FSumDigits
{
public static int SumDigits(int n)
{
string number = Convert.ToString(n);
int sum = 0;
for (int i = 0; i < number.Length; i++)
sum += Convert.ToInt32(number.Substring(i, 1));
return sum;
}
public static void Main()
{
Console.WriteLine(SumDigits(123));
}
}
```

Exercisey
5.17