using System;

​

public class MyProgram

{

    public static void Main(string[] args)

    {

        Console.WriteLine("Guess Mr Yip's age.");

        Console.WriteLine("Age = ");

        int age;

        int count;

​

        count = 1;

        age = (int) inputValue();

        while (age != 48)

        {

            count = count + 1;

            Console.WriteLine("Wrong, please guess again :) ");

            age = (int) inputValue();

        }

        Console.WriteLine("That's is Correct!!!");

        Console.WriteLine("You guessed it in " + count + " attempt.");

    }

    // .NET can only read single characters or entire lines from the

    // console. The following function safely reads a double value.

    private static double inputValue()

    {

        double result;

        while (!double.TryParse(Console.ReadLine(), out result));

        return result;

    }

}

​