int main()
{
int a,b;
scanf("%d",&b);
a=sumdigits(b);
scanf("%d",&b);
a+=sumdigits(b);
scanf("%d",&b);
a+=sumdigits(b);
while(a>9)
{
a=sumdigits(a);
}
printf("%d",a);
return 0;
}
main( )
{
long int num;
printf("Enter number : ");
scanf("%ld", &num);
printf("%d\n",sumdigits(num));
printf("\n");
display(num);
printf("\n");
Rdisplay(num);
printf("\n");
}/*End of main()*/
/*Finds the sum of digits of an integer*/
int sumdigits(long int n)
{
if( n/10 == 0 ) /* if n is a single digit number*/
return n;
return n%10 + sumdigits(n/10);
}/*End of sumdigits()*/
