Program to Find Armstrong Number C++

Here we write a program to find whether the given number is Armstrong number C++ or not.

First let’s start understand what is Armstrong number also known as Narcissistic number ?

What is Armstrong number:

A number is Armstrong if the sum of cubes of individual digits of a number is equal to the number itself.

Example: 371 is an Armstrong number.

```371 = (3*3*3)+(7*7*7)+(1*1*1)
where:
(3*3*3)=27
(7*7*7)=343
(1*1*1)=1
So:
27+343+1=371```

Some other Armstrong numbers are: 0, 1, 153, 370, 407.

Now lets write the program for the same.

Program to check whether the number is Armstrong number C++:

```#include <iostream>
using namespace std;

int main()
{
int number, sum = 0, temp, remainder;

cout<<"Enter an integern;
cin>>number;

temp = number;

while( temp != 0 )
{
remainder = temp%10;
sum = sum + remainder*remainder*remainder;
temp = temp/10;
}

if ( number == sum )
cout<<"Entered number is an armstrong number.n";
else
cout<<"Entered number is not an armstrong number.n";

return 0;
}```