C++ Program to check whether number is Armstrong number

#include<iostream.h>
int main()
{
      int sum,temp,rem,n;
     cout<<"Enter the number \n";
     cin>>n;
     cout<<" Entered number is \t";
     cout<<n;
     cout<<"\n";
     sum=0; 
     temp=n;
      do
        {
                rem=n%10;
                n=n/10;
                sum=sum+rem*rem*rem;
           }while(n!=0);
     if(sum==temp)
            cout<<"This is Armstrong number.\n";
   else
           cout<<"This is not Armstrong number.\n";
return 0;
}

Output:-

Enter the number

371

Entered number is    371

This is Armstrong number.