import java.util.Scanner;
public class Digit_Sum
{
int sum = 0;
public static void main(String[] args)
{
int n;
Scanner s = new Scanner(System.in);
System.out.print("Enter the number:");
n = s.nextInt();
Digit_Sum obj = new Digit_Sum();
int a = obj.add(n);
System.out.println("Sum:"+a);
}
int add(int n)
{
sum = n % 10;
if(n == 0)
{
return 0;
}
else
{
return sum + add(n / 10);
}
}
}
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