Sum of digit of a given number

Sum of digit of a given number

/*WAP to find out the sum of digit of a given number*/

#include<stdio.h>

#include<conio.h>

void main()

{

int n,d,r=0;

clrscr();

printf("enter the number:");

scanf("%d",&n);

while(n>0)

{

d=n%10;

r=r+d;

n=n/10;

}

printf("sum of digit is %d",r);

getch();

}

OUTPUT:

enter the number:123

sum of digit is 6