namespace Lesson2_成员变量和访问修饰符练习
{
    class Person
    {
        public int age,height;
        public string name,address;
    }
    class Student
    {
        public string name;
        public int number, age;
        public Student deskmate;
        void Study()
        {
            Console.WriteLine();
        }
    }
    class Cla
    {
        public string Major;
        public int TeacherCapacity,StudentCapacity;

    }
    internal class Program
    {
        static void Main(string[] args)
        {
            //Console.WriteLine("Hello, World!");
            //Person p = new Person();
            //Person p2 = new Person();
            //p.age = 10;
            //p2.age = 20;
            ////不同对象的存储空间不同，所以值不会相同
            //Console.WriteLine(p.age);
            //Console.WriteLine(p2.age);

            Person p = new Person();
            p.age = 10;
            Person p2 = p;
            p2.age = 20;
            //p2指向了p的内存地址，共享一块地址，所以p2改了，p也会改为20
            Console.WriteLine(p.age);
            Console.WriteLine(p2.age);

            //Student s = new Student();
            //s.age = 10;
            //int age = s.age;
            //age = 20;
            ////因为age是值类型，是一个新的空间，所以s.age不受影响
            //Console.WriteLine(s.age);
            //Console.WriteLine(age);

            Student s = new Student();
            s.deskmate = new Student();
            s.deskmate.age = 10;
            Student s2 = s.deskmate;
            s2.age = 20;
            //s.deskmate虽然new了空间在后面被指向了s2的地址
            //所以s.deskmate的地址是和s2共享的  s.deskmate就是s2
            //s2.age变了s.deskmate.age也会变
            Console.WriteLine(s.deskmate.age);
            Console.WriteLine(s2.age);

            Cla c = new Cla();

        }
    }
}