ClassXe-ClassHinh
using System;
using System.Text;
namespace ClassXe
{
public class Xe
{
public Xe(string MyName) { this.MyName = MyName;}
public virtual void Who()
{
Console.WriteLine("
Toi la xe {0}", MyName);
}
protected string MyName;
}
public class Xe_Dulich : Xe
{
public Xe_Dulich(string MyName) : base(MyName) { }
public override void Who()
{
Console.WriteLine("
Toi la xe du lich {0}.", MyName);
}
}
public class Xe_May : Xe
{
public Xe_May(string MyName) : base(MyName) { }
public override void Who()
{
Console.WriteLine("
Toi la xe may {0}.", MyName);
}
}
public class Tester
{
static void Main()
{
Xe xe = new Xe("Toyota");
xe.Who();
Xe[] mangxe = new Xe[5];
mangxe[0] = new Xe_Dulich("Toyota");
mangxe[1] = new Xe_May("Dream");
mangxe[2] = new Xe_May("Spacy");
mangxe[3] = new Xe_Dulich("BMW");
mangxe[4] = new Xe_Dulich("Fiat");
for (int i = 0; i < 5; i++)
{
mangxe[i].Who();
}
}
}
}
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using System;
using System.Text;
namespace Class_HinhHoc
{
public class Diem
{
public Diem(int x1, int y1)
{
this.x1 = x1;
this.y1 = y1;
}
public virtual void Draw()
{
Console.Write("
Ve diem tai toa do( {0};{1} )", x1, y1);
}
protected int x1;
protected int y1;
}
public class DuongThang : Diem
{
public DuongThang(int x1,int y1,int x2, int y2)
: base(x1,y1)
{
this.x2 = x2;
this.y2 = y2;
}
public override void Draw()
{
Console.Write("
Ve doan thang voi diem dau ( {0};{1} ) va diem cuoi ( {2};{3} ) ",x1,y1,x2,y2);
}
private int x2;
private int y2;
}
public class DuongTron : Diem
{
public DuongTron(int x1, int y1, int r)
: base(x1, y1)
{
this.r = r;
}
public override void Draw()
{
Console.Write("
Ve duong tron tam ( {0};{1} ) ban kinh {2} ",x1,y1,r);
}
private int r;
}
public class HinhChuNhat : Diem
{
public HinhChuNhat(int x1, int y1, int x2, int y2)
: base(x1, y1)
{
this.x2 = x2;
this.y2 = y2;
}
public override void Draw()
{
Console.Write("
Ve hinh chu nhat diem tren ( {0};{1} ) va diem duoi ( {2};{3} ) ", x1, y1, x2, y2);
}
private int x2;
private int y2;
}
public class HinhVuong : Diem
{
public HinhVuong(int x1, int y1, int a)
: base(x1, y1)
{
this.a = a;
}
public override void Draw()
{
Console.Write("
Hinh vuong voi mot dinh tai ( {0};{1} ) chieu dai canh la {2} ", x1, y1, a);
}
private int a;
}
public class TamGiac : Diem
{
public TamGiac(int x1,int y1,int x2, int y2, int x3, int y3)
: base(x1,y1)
{
this.x2 = x2;
this.y2 = y2;
this.x3 = x3;
this.y3 = y3;
}
public override void Draw()
{
Console.Write("
Ve tam giac voi ba diem ( {0};{1} ) , ( {2};{3} ) va ( {4};{5} )",x1,y1,x2,y2,x3,y3);
}
private int x2;
private int y2;
private int x3;
private int y3;
}
public class Tester
{
public static void Main()
{
Diem[] mang = new Diem[6];
mang[0] = new Diem(1 , 2);
mang[1] = new DuongThang(1, 2, 2, 4);
mang[2] = new DuongTron(1, 3, 10);
mang[3] = new HinhChuNhat(3, 4, 5, 6);
mang[4] = new HinhVuong(5, 6, 12);
mang[5] = new TamGiac(1, 2, 3, 4, 5, 6);
for (int i = 0; i < mang.Length; i++)
{
mang[i].Draw();
}
Console.WriteLine();
}
}
}
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