2019.8.21 Class & InterFace &abstract& 属性

1. Create interFace

interface ISuper
    {
        int GetSuper();
    }

 

Class can inherit multiple interfaces, or can only inherit a single abstract class.

Implemented in derived classes

public int GetSuper()
        {
            return age + 100;
        }

InterFace differs abstract: abstract class can not be instantiated, inherited by other classes to achieve a specific method, the method comprising the abstract class fields, the interface rules, a member can not have variable field

 

Create a property (two kinds)  public int Age // genus         {

GET 
            { 
                return Age + 10 ; 
            } 
            SET 
            { 
                Age = value - 10 ; // value is a member of a specific variable 
            } 
        } 


        public  int ID // attribute 
        {
             GET ;
             SET ; 
        }

Property values ​​may be set (default 0):

person.Age = 10;

Use the property:

Console.WriteLine(person.Age);

            person.Age = 10;

 

Too sleepy today. the above

good night