Program to find sum of digits of a number using recursive function

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/*Program to find sum of digits of a number using recursive function*/

#include<stdio.h>

#include<conio.h>

 void main()

 {

            int n,i;

           int rec (int);

           clrscr();

           printf("Enter the number whose sum of digits is required\n");

           scanf("%d",&n);

           i=rec(n);

           printf("Sum of digits of given number is %d",i);

           getch();

}

 i

int rec( int n)

{

                int i,sum;

                while(n>0)

                {

                                i=n%10;

                                n=n/10;

                                sum=i+rec(n);

                                return(sum);

                }

}

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