10. Armstrong Number Check

 #include <stdio.h>

#include <math.h>

int main() {

    int num, original, remainder, n = 0, result = 0;

    printf("Enter a number: ");

    scanf("%d", &num);

    original = num;

    while (original != 0) {

        original /= 10;

        ++n;

    }

    original = num;

    while (original != 0) {

        remainder = original % 10;

        result += pow(remainder, n);

        original /= 10;

    }

    if (result == num)

        printf("Armstrong Number\n");

    else

        printf("Not an Armstrong Number\n");

    return 0;

}