using System;

public class Program

{

    public static void Main()

    {

            //variable declaration

            int age;

​

            //input data

            Console.WriteLine("Enter age:");

            age = int.Parse(Console.ReadLine());

​

            if(age < 18)

            {

                Console.WriteLine("You are not qualified");

            }

            else

            {

                Console.WriteLine("You are qualified");

            }

            Console.ReadLine();

    }

}