using System;

​

abstract class  Customer {

string fname, lname, id ;

​

public string FNAME{

    get{return fname;}

    set{fname = value;}

 }

public string LNAME{

    get{return lname;}

    set{lname = value;}

 }

​

 public string ID{

    get{return id;}

    set{id = value;}

}   

public abstract void GetInfo(); 

public abstract void Display(); 

public abstract void AssignDisc();

​

}

​

class newCustomer :Customer {

string Custstatus,Address ; 

double discount,cost; 

int numitems;

​

public newCustomer(string CS, string AD, double DC, double C, int N ){

 Custstatus = CS;

 Address = AD;

 discount = DC;

 cost = C;

 numitems = N;

}

public override void  GetInfo(){

try{

Console.WriteLine("Enter ID");

ID = Console.ReadLine();

Console.WriteLine("Enter First Name");

FNAME = Console.ReadLine();

​

Console.WriteLine("Enter Last Name");

LNAME = Console.ReadLine();

​

Console.WriteLine("Enter Address");

Address = Console.ReadLine();   

} catch(FormatException){

Console.WriteLine("Invalid Input");

}

}

public override void  Display(){

Console.WriteLine("Customer ID Is: "+ID);

Console.WriteLine("Customer First Name Is: "+FNAME);

Console.WriteLine("Customer Last Name Is: "+LNAME);

Console.WriteLine("Customer Address Is: "+Address);

}

public override void AssignDisc(){

Console.WriteLine("Please Enter Customer Status");

Custstatus =  Console.ReadLine();

if (Custstatus == "Platinum") {

discount =  0.1;

}else{

if (Custstatus == "Gold"){

discount =  0.07;

}else{

discount = 0;

}

}

}

​

public void Calc_Payment(){

​

​

}

​

public double Calc_Payment(int n , double w ){

​

return (n *  w) - discount;

​

​

}

​

}

​

public class Program

{

    public static void Main()

    {

        newCustomer newcust = new newCustomer( "",  "", 0.0, 0.0, 0);

        newcust.GetInfo(); 

        newcust.Calc_Payment();

        newcust.AssignDisc();

        newcust.Calc_Payment(3, 120.50);

        newcust.Display();

​

​

    }

}