c++ program to find the perfect numbers within a given number of range

#include <iostream>
using namespace std;
void main()
{
  int n,i,sum;
  int mn,mx;
    cout<<"Input the starting range or number : ";
    cin>>mn;
    cout<<"Input the ending range of number : ";
    cin>>mx;
    cout<<"The Perfect numbers within the given range : ";
    for(n=mn;n<=mx;n++)
{
      i=1;
      sum = 0;
    while(i<n)
{
      if(n%i==0)
           sum=sum+i;
          i++;
    }
    if(sum==n)
      cout<<"  "<<n;
    }
    cout<<endl;
system ("pause");
}

Test Data : 

Input the starting range or number : 1 

Input the ending range of number : 50 

Expected Output :

The Perfect numbers within the given range : 6 28