All Notes on BCA

#include<stdio.h>
#include<conio.h>
void main()
{
long int numbers1,tem,sumn=0;
clrscr();
 printf(" Enter a Number : ");
 scanf("%ld",&numbers1);

 while(numbers1>0)
 {
  tem=numbers1%10;
  numbers1=numbers1/10;
  sumn=sumn+tem;
 }
  printf("\nSum of digit is : %ld",sumn);
 getch();
}

INPUT
Enter a Number : 123
OUTPUT
Sum of digit is : 6