Sum of digits

Input	An integer
Output	Sum of  digits.
complexity	O(d).[no. of digit in the number]

Sod(a)
1.	[Initialize sum] sum := 0.
2.	Repeat while(n>0)
 Set d=n%10 ;
 sum=sum+n;
 Set n=n/10 ;
3.	return sum.

#include<stdio.h>
#include<conio.h>
int main()  
{  
   int n,i,d,sum=0;  
   printf("\n enter any integer number  :");  
   scanf("%d",&n);  
   while(n>0)  
   {  
             d=n%10;  
             sum+=d;  
             n=n/10;  
   }  
   printf("\ sum of digits=  %d",sum);  
   return 0;        
}