✅ What is an Armstrong Number?

A number is an Armstrong number if:

sum of cubes of its digits = the number itself (for 3-digit numbers)

Example: 153 = 1³ + 5³ + 3³ = 153

✅ Java Code:

import java.util.Scanner;

public class ArmstrongNumber {

public static void main(String[] args) {

Scanner sc = new Scanner(System.in);

// Input a number

System.out.print(“Enter a number: “);

int number = sc.nextInt();

int original = number;

int result = 0;

while (number != 0) {

int digit = number % 10;

result += digit * digit * digit; // cube of digit

number = number / 10;

}

if (result == original)

System.out.println(original + ” is an Armstrong number.”);

else

System.out.println(original + ” is not an Armstrong number.”);

}

}

📌 Sample Input/Output:

Input: 153

Output: 153 is an Armstrong number.