/*Program to find Sum of two numbers without using arithmetic operators*/

Source code:

#include<stdio.h>

void main()

 {

  int a,b;

  printf("Enter values for a,b\n");

  scanf("%d%d",&a,&b);

  while(a!=0&&b!=0)

   {

    a++;

    b--;

   }

  printf("Sum of two numbers=%d",a);

 }

Output:

Enter values for a,b

12

9

Sum of two numbers=21

******************************************************************

/*Program to find sum of individual digits of a given integer number*/

Source code:

#include<stdio.h>

void main()

 {

  int n,sum=0,digit;

  printf("Enter value for n\n");

  scanf("%d",&n);

  while(n!=0)

   {

    digit=n%10;

    sum=sum+digit;

    n=n/10;

   }

  printf("Sum of individual digits=%d",sum);

 }

Output:

Enter value for n

142

Sum of individual digits=7

******************************************************************