Question

Program in c to find an armstrong number between two intervals

Answer 1

here is your Answer:

#include <stdio.h>

#include <math.h>

int main()

{

   int low, high, i, temp1, temp2, remainder, n = 0, result = 0;

   printf("Enter two numbers(intervals): ");

   scanf("%d %d", &low, &high);

   printf("Armstrong numbers between %d an %d are: ", low, high);

   for(i = low + 1; i < high; ++i)

   {

       temp2 = i;

       temp1 = i;

       // number of digits calculation

       while (temp1 != 0)

       {

           temp1 /= 10;

           ++n;

       }

       // result contains sum of nth power of its digits

       while (temp2 != 0)

       {

           remainder = temp2 % 10;

           result += pow(remainder, n);

           temp2 /= 10;

       }

       // checks if number i is equal to the sum of nth power of its digits

       if (result == i) {

           printf("%d ", i);

       }

       // resetting the values to check Armstrong number for next iteration

       n = 0;

       result = 0;

   }

   return 0;

}