using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
namespace ConsoleApplication33
{
interface simcard
{
void call();
void sms();
}
class xl : simcard
{
public void call()
{
Console.WriteLine("calling from xl");
}
public void sms()
{
Console.WriteLine("sms from xl");
}
}
class telkomsel : simcard
{
public void call()
{
Console.WriteLine("calling from telkomsel");
}
public void sms()
{
Console.WriteLine("sms from telkomsel");
}
}
class Program
{
static void Main(string[] args)
{
simcard sim;
Console.WriteLine("pilih operator = ");
Console.WriteLine(" 1. xl");
Console.WriteLine(" 2. telkomsel");
Console.Write(" Pilih ");
int a = int.Parse(Console.ReadLine());
if (a == 1)
{
sim = new xl();
sim.call();
sim.sms();
}
else
if (a==2)
{
sim = new telkomsel();
sim.call();
sim.sms();
}
}
}
}
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