using System;

public class Program

{

    public static void Main()

    {

        Execrcise1();

    }

    static void Execrcise1()

    {

        Console.WriteLine("Enter a number between 1 to 10:");

        var input = Console.ReadLine();

        var number = Convert.ToInt32(input);

        if (number >= 1 && number<= 10)

            Console.WriteLine("valid");

        else

            Console.WriteLine("invalid");

    }

}

​

/*

Application won’t compile with an error

https://forum.codewithmosh.com/t/application-wont-compile-with-an-error/17861

*/