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


Solution

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));    
}
}

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