#include<stdio.h>
#include<conio.h>
int sum (int);
int s=0;
int main()
{
int num,x;
	printf("enter the number whose sum is to be find");
	scanf("%d",&num);
	x=sum(num);
	printf("the sum of the entered number is %d",x);
	getch();
}
int sum(int n )
{
	int r;
	if (n!=0)
	{
	r=n%10;
	s=s+r;
	sum(n/10);
}
else
{
	return s;
}
}