# Write a program to identify if the number is Armstrong number or not

15 May 2022

Write a program to identify if the number is Armstrong number or not

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# Description

Get an input number from user and check whether the given number is an Armstrong number or not.

E.g.  Let the number be 1634,

Here 1^4 + 6^4 + 3 ^4 + 4^4 = 1634

Therefore, this is an Armstrong number

Input

153

Output

Armstrong number

Input

121

Output

Not an Armstrong number

# C Program

#include <stdio.h>

#include<math.h>

int main()

{

int num, copy, rem, result = 0, n = 0 ;

printf("Enter a number: ");

scanf("%d", &num);

copy = num;

while (num != 0)

{

num /= 10;

n++;

}

num = copy;

while (num != 0)

{

rem = num%10;

result += pow(rem, n);

num /= 10;

}

if(result == copy)

printf("Armstrong number");

else

printf("Not an Armstrong number");

return 0;

}

# C++ Program

#include <iostream>

#include<math.h>

using namespace std;

int main()

{

int num, copy, rem, result = 0, n = 0 ;

cout<<"Enter a number: ";

cin>>num;

copy = num;

while (num != 0)

{

num /= 10;

n++;

}

num = copy;

while (num != 0)

{

rem = num%10;

result += pow(rem, n);

num /= 10;

}

if(result == copy)

cout<<"Armstrong number";

else

cout<<"Not an Armstrong number";

return 0;

}

# Java

import java.util.Scanner;

public class Main

{

public static void main(String[] args) {

Scanner sc = new Scanner(System.in);

System.out.print("Enter a number : ");

int num = sc.nextInt();

int copy = num;

int result=0;

int n=0;

int rem;

while (num != 0)

{

num /= 10;

n++;

}

num = copy;

while (num != 0)

{

rem = num%10;

int mul=1;

for(int i=1;i<=n;i++) {

mul=mul*rem;

}

result=result+mul;

num /= 10;

}

if(result==copy)

System.out.println("Armstrong Number");

else

System.out.println("Not Armstrong number");

}

}

# Python

import math

num=int(input("Enter a number: "))

value = [int(d) for d in str(num)]

result = 0

for i in range(0, len(value)):

result = result + math.pow(value[i], len(value))

if result==num:

print("Armstrong number")

else:

print("Not an armstrong number")