Class armstrong_number 1/1/* * ashking13th@gmail.com * javaprogramsbyashking13th.blogspot.in * ashkingjava.blogspot.in *

* QUESTION *

* Design a program in java to check whether a number * is an armstrong number or not. * An armstrong number is a number in which the sum * ofcubes of every digit of the number is equal to * the number itself. * eg. 153 = 1^3 + 5^3 +3^ 3 = 1+125+27 = 153 */

import java.io.*;public class armstrong_number{ public void main()throws IOException { DataInputStream d=new DataInputStream(System.in); System.out.println("enter the number"); int n=Integer.parseInt(d.readLine()); int m=n; //creating dummy variable int s=0; int r=0; while(m>0) { r=m%10; s=s+(r*r*r); //finding sum of cubes of digits of the number m=m/10; } if(n==s) /* * checking if sum of cubes of every digit if the number * is equal to the number itself and then displaying messages * accordingly. */ { System.out.println("Number is an armstrong number"); } else { System.out.println("Number is not an armstrong number"); } }}

Mar 25, 2014 3:28:21 PM