text: #include<iostream>
  #include"Customer.h"
  
  using namespace std;
  
  
  int main(int argc, char *argv[]){
      double SaleAmount=100;
  
      Customer* gCustomer = new GoldCustomer;
      cout<< "Gold Customer final amount to be paid is "<<gCustomer->amountToBePaid(SaleAmount)<<endl;
  
      Customer* sCustomer = new SilverCustomer;
      cout<< "Silver Customer final amount to be paid is "<<sCustomer->amountToBePaid(SaleAmount)<<endl;
      return 0;
  }