c# 第五章 类 方法与重载
classusing aaaa; using System; using System.Collections.Generic; using System.Text; namespace aaaa { class Car { private string color;//不建议这样写建议开头改为大写 public string Color { get { return color; } set { color value; } //赋值时自动调用set //读取时自动调用get } public string sds { get; get; } 白色; //自动属性 //编译器自动生成私有字段 //无需手写字段和访问器体 } }//35 //字段是类的数据成员用来访问数据 //访问修饰符 类型 字段名不写默认private /* * class a * { * public:int a; * private :string b; * } */ //36 //属性 using aaaa; Car car1 new Car(); car1.Color sjshks;//调用set string c car1.Color;//调用getusing System.Text; //方法类似c的成员函数但是前面要加访问的权限同样也可以进行重载 namespace aaaa { class Car { public string Colour { get; set; } public void Start() { Console.WriteLine(ok); } } } 样例using System; public class Book { private string tittle; private string author; private double price; private int year; public Book() { tittle 未知; author 未知; price 0; year 0; } public Book(string tittle,string author,double price,int year) { this.tittle tittle; this.author author; this.price price; this.year year; } public string Tittle { get { return tittle; } set { tittle value; } } public string Author { get { return author; } set { author value; } } public double Price { get { return price; } set { price value; } } public int Year { get { return year; } set { year value; } } public void ShowInfo() { Console.WriteLine($书名{tittle}); Console.WriteLine($作者{author}); Console.WriteLine($价格{price}); Console.WriteLine($出版年月{year}); } public bool isNewBook() { int currentYear DateTime.Now.Year; return (currentYear - year) 5; } public string GetInfo() { return $《{tittle}》-{author}-{price:C}-{year}年; } }主执行Book book1 new Book(); book1.Tittle C# 编程指南; book1.Author 张三; book1.Price 59.9; book1.Year 2024; book1.ShowInfo();
