C++ Program for Armstrong Number

Program 1

// Program for Armstrong
// A number whos some of qube of individual digit is equal to number
#include<iostream>
#define clrscr() system("cls")
using namespace std;

int main()
{
     int n,r,sum,m,i=1;
     clrscr();
    //  cout<<"Enter a number";
    //  cin>>n;
    while(i<=500)
    {
        sum=0;
        n=i;
       m=n;
       while(n!=0)      
       {
         r=n%10;   
         sum=sum+(r*r*r); 
        n=n/10;  
       }
      if(m==sum)
        //cout<<"No is armstrong";
        cout<<m<<endl;
    //   else
    //    cout<<"No is not armstrong";
       
       i++;
    }
}