using System;

namespace Ticket{   

public class tickets

{

public int childt = 10;

    public int adultt = 20;

    public virtual void call (int numticets){}

}

public class child : tickets

​

        {

        public override void call (int numticets)

        {

int total=numticets* childt;

Console.WriteLine(total);

}

public class adult : tickets

{

public override void call(int numticets)

{

int total = numticets*adultt;

Console.WriteLine(total);

}

public class program

{

public static void Main(string[]args)

{

Console.WriteLine("Enter age");

int age=Convert.ToInt32(Console.ReadLine());

​

Console.WriteLine("Enter number of tickets");

int numtickets=Convert.ToInt32(Console.ReadLine());

​

if (age < 18)

{

tickets obj = new child();

obj.call(numtickets);

}

else

{

tickets obj =  new adult();

obj.call(numtickets);

    }

    }

}

}

}}

​