# Input a number and check if it is an armstrong number or not using a function in Java

###### Function - Question 8

In this question, we will see how to input a number and check if it is an Armstrong number or not in Java programming using a function. To know more about function click on the function lesson.

Q8) Write a program in Java to input a number and check if it is an Armstrong number or not using a function. The function should return 1 if the numbers is an Armstrong number else return 0. An Armstrong number is a number whose sum of the cube of its digit is equal to the number itself.

Example 153 = 13+53+33

#### Program

``````import java.util.Scanner;

public class Q8
{
public static int armstrong(int num)
{
int s=0,t,d;
t=num;
while(t>0)
{
d=t%10;
s=s+(d*d*d);     // sum of cube of the digits
t=t/10;
}

if(s==num)
{
return 1;
}
return 0;
}

public static void main(String args[])
{
int n;
Scanner sc=new Scanner(System.in);
System.out.println("Enter a numbers ");
n=sc.nextInt();

if(armstrong(n)==1)
{
System.out.print("Armstrong Number");
}
else
{
System.out.print("Not Armstrong Number");
}
}
}``````

#### Output

```Enter a number 153
Armstrong Number```