✅ do using the lock object in the below code make seance?

c#
    internal class Program
    {



        static int? _aquired;

        static object _lock =  new object();

        static void Main(string[] args)
        {
            Thread T1 = new Thread(() => {
                int aquire = default;

                if(int.TryParse(Console.ReadLine(), out aquire)) 
                {

                    lock (_lock) 
                    {
                        _aquired = aquire;
                    }
                    
                }
            });

            T1.Start();

            T1.Join();

           

            Thread T2 = new Thread(() => {

                lock (_lock) 
                {
                    if (_aquired != default)
                    {
                        for (int i = 0; i <= _aquired; i++)
                        {
                            Console.WriteLine("The Turn = {0}", i);
                        }

                    }
                }

 
            });

            T2.Start();

            

        }


    }


}

c#
    internal class Program
    {



        static int? _aquired;

        static object _lock =  new object();

        static void Main(string[] args)
        {
            Thread T1 = new Thread(() => {
                int aquire = default;

                if(int.TryParse(Console.ReadLine(), out aquire)) 
                {

                    lock (_lock) 
                    {
                        _aquired = aquire;
                    }
                    
                }
            });

            T1.Start();

            T1.Join();

           

            Thread T2 = new Thread(() => {

                lock (_lock) 
                {
                    if (_aquired != default)
                    {
                        for (int i = 0; i <= _aquired; i++)
                        {
                            Console.WriteLine("The Turn = {0}", i);
                        }

                    }
                }

 
            });

            T2.Start();

            

        }


    }


}