sum of digit of given number

/*sum of digit of given number*/

#include<stdio.h>

#include<conio.h>

void main()

{

int number,sum=0,r;

clrscr();

printf("enter the number\n");

scanf("%d",&number);

do

{

r=number%10;

sum=sum+r;

number=number/10;

}

while(number!=0);

printf("sum of digit is=%d\n",sum);

getch();

}

OUTPUT

enter the number

123

sum of digit is=6