Armstrong number

 

Armstrong number

#include <stdio.h>
int main()
{
int num,copy_of_num,sum=0,rem;

//Store input number in variable num
printf("\nEnter a number:");
scanf("%d",&num);

/* Value of variable num would change in the
      below while loop so we are storing it in 
      another variable to compare the results 
      at the end of program
*/
copy_of_num = num;

/* We are adding cubes of every digit
* and storing the sum in variable sum
*/ 
   
while (num != 0)
 {
  rem = num % 10;
  sum = sum + (rem*rem*rem);
  num = num / 10;
 }

/* If sum of cubes of every digit is equal to number
* itself then the number is Armstrong
*/

if(copy_of_num == sum)
    printf("\n%d is an Armstrong Number",copy_of_num);

else
  printf("\n%d is not an Armstrong Number",copy_of_num);
  return(0);
}

output