write a program in c to check whether the number is armstrong or not

#include <stdio.h>
#include <math.h>

int isArmstrong(int number);

int main() {
    int number;

    printf("Enter a number: ");
    scanf("%d", &number);

    if (isArmstrong(number)) {
        printf("%d is an Armstrong number.\n", number);
    } else {
        printf("%d is not an Armstrong number.\n", number);
    }

    return 0;
}

int isArmstrong(int number) {
    int originalNumber, remainder, result = 0, n = 0;

    originalNumber = number;

    // store the number of digits
    while (originalNumber != 0) {
        originalNumber /= 10;
        ++n;
    }

    originalNumber = number;

    // calculate the result
    while (originalNumber != 0) {
        remainder = originalNumber % 10;
        result += pow(remainder, n);
        originalNumber /= 10;
    }

    // check if the result is equal to the original number
    if (result == number) {
        return 1;
    } else {
        return 0;
    }
}