armstrong.cpp

#include<bits/stdc++.h>
using namespace std;

bool checkArmstrong(int num)
{
    int digit = 0, temp=num;
    while(temp!=0)
    {
        digit++;
        temp/=10;
    }

    int sum=0;
    for(temp=num; temp!=0; temp/=10)
    {
        sum+=pow(temp%10,digit);
    }

    if(sum==num)
    {
        return true;
    }
    return false;
}

int main()
{
    int num;
    cin>>num;

    bool result = checkArmstrong(num);

    if(result)
    {
        cout<<"Armstrong Number"<<endl;
    }

    else{
        cout<<"Not an Armstrong Number"<<endl;
    }
    return 0;
}