C # Create and Initialize classes

Using system;using system.collections.generic;using system.linq;using system.text;namespace c_ Edit Base {    class person    {public        string Name;//Because name is not assigned, and it is of type string, its default value is null public        int age;  Because age and gender are not assigned. And it's two int types, so the default value for both of them is 0 public        int Gender;        public void SayHello ()        {            Console.WriteLine ("Good Everyone");            Console.readkey ();        }    }    Class program    {        static void Main (string[] args)        {            //int i = 1;//value type initialization is a direct assignment. The initialization of a reference type requires the new person,             p1 = new Person (), or//new person () to create a person class object.
person P1 = new person () means creating an object of the person type first and then using the variable P1 to point to it            P1.sayhello ();}}    

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C # Create and Initialize classes