CÓ SAI GÌ MONG MẤY BÁC CHO Ý KIẾN NHE
Diem.cs
CODE:
HinhChuNhat.cs
HinhTron.cs
Tester.cs
Diem.cs
CODE:
- Code:
using System;
public class Diem
{
public Diem(float x, float y)
{
this.x = x;
this.y = y;
}
public float KhoangCachToiO()
{
return (float)Math.Sqrt(x * x + y * y);
}
public float X
{
get
{
return x;
}
}
public float Y
{
get
{
return y;
}
}
float x;
float y;
}
HinhChuNhat.cs
- Code:
using System;
public class HinhChuNhat
{
public HinhChuNhat(Diem A, float ngang, float cao)
{
this.A = A;
this.ngang = ngang;
this.cao = cao;
}
public Diem TamI()
{
float a = A.X + ngang / 2;
float b = A.Y + cao / 2;
return new Diem(a, b);
}
public float KhoangCachTamToiO()
{
return TamI().KhoangCachToiO();
}
Diem A;
public float ngang;
public float cao;
}
HinhTron.cs
- Code:
using System;
class HinhTron
{
public HinhTron(HinhChuNhat H)
{
this.H = H;
tam = H.TamI();
banKinh = H.ngang / 2;
}
public float ChuVi()
{
return (float)Math.PI * 2 * banKinh;
}
public float DienTich()
{
return (float)Math.PI * banKinh * banKinh;
}
public float DienTichGioiHanBoiHinhVuongvaHinhTron()
{
return 4 * banKinh * banKinh - DienTich();
}
string PTCT()
{
string pt;
pt = "(x - " + tam.X + ")^2 + (y - " + tam.Y + ")^2 = " + banKinh * banKinh;
return pt;
}
public void PhuongTrinhChinhTac()
{
Console.WriteLine("PTCT: " + PTCT());
}
string PTTQ()
{
string pt;
pt = "(x^2 + y^2 - " + 2 * tam.X + "x + " + 2 * tam.Y + "y + " + (tam.X * tam.X + tam.Y * tam.Y - banKinh * banKinh) + " = 0";
return pt;
}
public void PhuongTrinhTongQuat()
{
Console.WriteLine("PTTQ: " + PTTQ());
}
public void HinhTronNgoaiTiepHinhVuong()
{
Console.WriteLine("PTTQNTHV: " + PTTQ());
}
Diem DiemThuocDongTron(float x_M)
{
float y_M = tam.Y - (float)Math.Abs(Math.Sqrt(banKinh * banKinh - (x_M - tam.X) * (x_M - tam.X)));
return new Diem(x_M, y_M);
}
public float DienTichTamGiac(float x_M)
{
Diem A = new Diem(tam.X - banKinh, tam.Y);
Diem B = new Diem(tam.X + banKinh, tam.Y);
Diem M=DiemThuocDongTron(x_M);
return (float)0.5 * (float)Math.Sqrt((A.X - M.X) * (A.X - M.X) + (A.Y - M.Y) * (A.Y - M.Y)) * (float)Math.Sqrt((B.X - M.X) * (B.X - M.X) + (B.Y - M.Y) * (B.Y - M.Y));
}
Diem tam;
float banKinh;
HinhChuNhat H;
}
Tester.cs
- Code:
using System;
class Tester
{
public static void Main()
{
float x,y,canh;
Console.Write("Nhap vao hoanh do goc tren cung ben trai: ");
x = float.Parse(Console.ReadLine());
Console.Write("Nhap vao tung do goc tren cung ben trai: ");
y = float.Parse(Console.ReadLine());
Console.Write("Nhap vao canh hinh vuong: ");
canh = float.Parse(Console.ReadLine());
HinhChuNhat H = new HinhChuNhat(new Diem(x, y), canh, canh);
HinhTron C = new HinhTron(H);
Console.WriteLine("Chu vi: " + C.ChuVi());
Console.WriteLine("Dien tich: " + C.DienTich());
Console.WriteLine("Gioi han: " + C.DienTichGioiHanBoiHinhVuongvaHinhTron());
C.PhuongTrinhChinhTac();
C.PhuongTrinhTongQuat();
C.HinhTronNgoaiTiepHinhVuong();
float x_M;
do
{
Console.Write("Nhap vao x_M({0} < x_M < {1}): ", x, x + canh);
x_M = float.Parse(Console.ReadLine());
if (x_M <= x || x_M >= x + canh)
Console.WriteLine("Ban da nhap sai --> Nhap lai mau!");
}
while (x_M <= x || x_M >= x + canh);
Console.WriteLine("S tam giac: " + C.DienTichTamGiac(x_M));
Console.ReadLine();
}
}