/* answer to question 13 */

#include<stdio.h>
#include<conio.h>

void main(void)
{
int num,modulo,sum=0;

printf("Insert a number:");
scanf("%d",&num);

while(num>0)
{
	modulo = num % 10 ;
	
	num=num/10;
	
	sum=sum+modulo;
}


printf("Sum of digits is:%d \n",sum);


getch();
}