using System; namespace dirtysalt{ public class Car//class of car,has attribute of 'weight' and 'speed' { private int weight; private int speed; public Car(int Weight,int Speed){ weight=Weight; speed=Speed; } public void setweight(int Weight){ weight=Weight; } public void setspeed(int Speed){ speed=Speed; } public int getspeed(){ return speed; } public int getweight(){ return weight; } };

public class Sportcar:Car//inherit class of Car,has attributes of 'weight','speed','color' { private string color; public Sportcar(int Weight,int Speed,string Color):base(Weight,Speed) { setweight(Weight); setspeed(Speed); color=Color; } public void setcolor(string Color){ color=Color; } public string getcolor(){ return color; } public static void Main() { Car car=new Car(100,100); Sportcar sportcar=new Sportcar(100,200,"blcak");//here has a problem Console.WriteLine("car's weight is "+car.getweight()); Console.WriteLine("car's speed is "+car.getspeed()); Console.WriteLine("sportcar's weight is "+sportcar.getweight()); Console.WriteLine("sportcar's speed is "+sportcar.getspeed()); Console.WriteLine("sportcar's speed is "+sportcar.getcolor()); } } } 希望对大家有帮助！！！！！！

[此贴子已经被幻风幻云于2005-4-4 19:31:16编辑过]

对楼主的东西少加改造，大家别介意啊！ using System; namespace dirtysalt{ public class Car // 声明一个car类,他包括 wight,speed 两个字段 { private int weight; private int speed; //下面这是一个带参数的构造函数 public Car(int Weight,int Speed){ weight=Weight; speed=Speed; } //SET方法 public void setweight(int Weight){ weight=Weight; } public void setspeed(int Speed){ speed=Speed; } //get方法 public int getspeed(){ return speed; } public int getweight(){ return weight; } };

public class Sportcar:Car//inherit class of Car,has attributes of 'weight','speed','color' { private string color; //下面是定义一个继承类，继承于car类。 public Sportcar(int Weight,int Speed,string Color):base(Weight,Speed) { setweight(Weight); setspeed(Speed); color=Color; } public void setcolor(string Color){ color=Color; } public string getcolor(){ return color; } //函数入口 public static void Main() { Car car=new Car(100,100); Sportcar sportcar=new Sportcar(100,200,"blcak");//here has a problem Console.WriteLine("car's weight is "+car.getweight()); Console.WriteLine("car's speed is "+car.getspeed()); Console.WriteLine("sportcar's weight is "+sportcar.getweight()); Console.WriteLine("sportcar's speed is "+sportcar.getspeed()); Console.WriteLine("sportcar's speed is "+sportcar.getcolor()); } } }