C++ Program to check number is Armstrong or not.

An Armstrong number of three digits is an integer such that the sum of the cubes of its digits is equal to the number itself. 

For example: 153 = 1*1*1 + 5*5*5 + 3*3*3 // 153 is an Armstrong number.

 C++ Program to check number is Armstrong or not.

#include <iostream>
using namespace std;

int main() {
    
    int n, temp, sum=0, r;
    cout<<"Enter Number : ";
    cin>>n;
    temp=n;
    while(n!=0)
    {
        r=n%10;
        sum=sum+r*r*r;
        n/=10;
    }
    if(sum==temp)
        cout<<temp<<" Is Amstrong Number";
    else
        cout<<temp<<" Is Not a Amstrong Number";
    return 0;
}

Output :