using System;

interface IConta

{

      void Depositar ();

      void Sacar ();

      void getSaldo ();

}

​

class ContaCorrete: IConta

{

     public static void Main()

     {

     ContaCorrete marcio = new ContaCorrete();

     marcio.Sacar();

     }

     public void Sacar()

     {

     Console.WriteLine("{0}",saldo - valor );

     }

     public void Deposita()

     {

     Console.WriteLine();

     }

     public void Getsaldo()

     { 

     Console.WriteLine();

     }

     public double saldo = 100;

     public double tarifa = 1.50;

     public double valor = 50;

}

​

​

class ContaPoupança : Iconta