To find the sum of the digits of a number

/* Program to find the sum of the digits of a n-digit number */

#include<stdio.h>

#include<conio.h>

void main()

{

  int n,sum=0,r;

  clrscr();

  printf("Enter any n-digit number:\n");

  scanf("%d",&n);

  while(n>0)

  {

    r=n%10;

    sum=sum+r;

    n=n/10;

  }

  printf("\nSum of digits of given number:%d",sum);

  getch();

}

 

OUTPUT

Enter any n-digit number:

1234

 

Sum of digits of given number:10