Solution :
import java.util.*;
public class Slip16A {
int sum =0;
public static void main(String args[]) throws Exception{
int n;
Scanner s = new Scanner(System.in);
System.out.print("Enter the Number : ");
n =s.nextInt();
Slip16A obj = new Slip16A();
int a = obj.sum_digit(n);
System.out.println("Sum of Digit is : "+a);
}
int sum_digit(int n){
sum = n%10;
if(n==0){
return 0;
}else{
return sum +sum_digit(n/10);
}
}
}
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