# Check a given number is an Armstrong Number

### Example:-

153, 307, 407....

#### Sample Input/Output:-

Sample Input First: 250                         Sample Output First: It is not an Armstrong Number

Sample Input Second: 153                    Sample Output SecondIt is an Armstrong Number

#### Explanation:-

For output 1st:  sum of cubes of digits(250)=2³+5³+0³=8+125+0=133 ≠ Given Number

For output 2nd: sum of cubes of digits(153)=1³+5³+3³=1+125+27=153  = Given Number

Data requirement:-

Input Data:- num

Output Data:-String Output

Program in C

Here is the source code of the C Program to find the sum of first n natural numbers.

Code:

#include<stdio.h>
int main()
{
int num;
printf("Enter a number:");
scanf("%d",&num);
int num2=num;
int sum=0;
while(num!=0)
{
int rem=num%10;
num=num/10;
sum=sum+rem*rem*rem;
}
if(sum==num2)
printf("It is an Armstrong Number");
else
printf("It is not an Armstrong Number");
}

Input/Output:
Enter a number:250
It is not an Armstrong Number

Program in C++

Here is the source code of the C++ Program to find the sum of first n natural numbers.

Code:

#include<iostream>
using namespace std;
int main()
{
int num;
cout<<"Enter a number:";
cin>>num;
int num2=num;
int sum=0;
while(num!=0)
{
int rem=num%10;
num=num/10;
sum=sum+rem*rem*rem;
}
if(sum==num2)
cout<<"It is an Armstrong Number";
else
cout<<"It is not an Armstrong Number";
}

Input/Output:
Enter a number:153
It is an Armstrong Number

Program in Java

Here is the source code of the Java Program to find the sum of first n natural numbers.

Code:

import java.util.Scanner;
public class ArmstrongNumberNumberOrNot {

public static void main(String[] args) {
Scanner cs=new Scanner(System.in);
int num;
System.out.println("Enter a number:");
num=cs.nextInt();
int num2=num;
int sum=0;
while(num!=0)
{
int rem=num%10;
num=num/10;
sum=sum+rem*rem*rem;
}
if(sum==num2)
System.out.println("It is an Armstrong Number");
else
System.out.println("It is not an Armstrong Number");
cs.close();
}
}

Input/Output:
Enter a number:
407
It is an Armstrong Number

Program in Python

Here is the source code of the Python Program to find the sum of first n natural numbers.

Code:

'num=int(input("Enter a number:"))
num2=num
sum=0
while(num!=0):
rem=num%10
num=int(num/10)
sum=sum+rem*rem*rem
if sum==num2:
print("It is an Armstrong Number")
else:
print("It is not an Armstrong Number")

Input/Output:
Enter a number:555
It is not an Armstrong Number