// Ham khoi dung sao chep
public ThoiGian(ThoiGian tg)
{
nam = tg.Nam;
thang = tg.thang;
ngay = tg.ngay;
gio = tg.gio;
phut = tg.phut;
giay = tg.giay;
}
public static void Main()
{
// Khoi tao doi tuong 1 voi ham khoi dung DateTime
ThoiGian t1 = new ThoiGian(DateTime.Now);
t1.ThoiGianHienHanh();
// Khoi tao doi tuong 2 voi ham khoi dung co bien thanh vien mac dinh
ThoiGian t2 = new ThoiGian(2016, 06, 27, 14, 32);
t2.ThoiGianHienHanh();
// Khoi tao doi tuong 3 voi ham khoi dung sao chep
ThoiGian t3 = new ThoiGian(t1);
t3.ThoiGianHienHanh();
// Get time dung tham chieu ref
int gio = 0, phut = 0, giay = 2;
t3.GetTime(ref gio, ref phut, ref giay);
Console.WriteLine("get time: {0}:{1}:{2}", gio, phut, giay);
// Get date dung tham chieu out
int nam, thang, ngay;
t3.GetDay(out nam, out thang, out ngay);
Console.WriteLine("Get day: {0}/{1}/{2}", nam, thang, ngay);
// Truy cap bang thuoc tinh
// Lay du lieu tu thuoc tinh
int pNam = t3.Nam;
Console.WriteLine("Lay Nam: {0}", pNam);
pNam++;
t3.Nam = pNam;
Console.WriteLine("Update Nam: {0}", pNam);
// Phuong thuc
Console.WriteLine();
int var1 = 5;
float var2 = 10.5f;
Parameter pa = new Parameter();
pa.SomeMethod(var1, var2);
// Dem so luong Cats
Console.WriteLine();
Cat.HowManyCats();
Cat mun = new Cat();
Cat.HowManyCats();
Cat muop = new Cat();
Cat miu = new Cat();
Cat.HowManyCats();
// bai tap duong tron
Console.WriteLine();
DuongTron dt = new DuongTron(4, new Point(2, 3));
Console.WriteLine("Chu vi duong tron: {0:F2}", dt.ChuVi());
Console.WriteLine("Dien tich duong tron: {0:F2}", dt.DienTich());
DuongTron dt2 = new DuongTron(6, new Point(3, 5));
dt2.BanKinh = 4;
Console.WriteLine("Chu vi duong tron: {0:F2}", dt2.ChuVi());
Console.WriteLine("Dien tich duong tron: {0:F2}", dt2.DienTich());
// Bai tap phuong trinh bac 2
Console.WriteLine();
PTBac2 pt1 = new PTBac2(1, -2, 1);
bool KtCoNghiem = pt1.TinhNghiem();
if (KtCoNghiem == false)
{
Console.WriteLine("PT vo nghiem");
}
else
{
Console.WriteLine("PT co nghiem x1 = {0:F2}", pt1.X1);
Console.WriteLine("PT co nghiem x2 = {0:F2}", pt1.X2);
}
//
Console.ReadLine();
}