static void Main(string[] args)
{
NoteBook notebook = new NoteBook();
Desktop desktop = new Desktop();
NetBook netbook = new NetBook();
DeviceManager manager = new DeviceManager();
manager.TurnOff(notebook); //저부 Computer를 상속받으므로 Computer로 되어있는 필드로도 들어올 수 있음(암시적 형변환)
manager.TurnOff(desktop);
manager.TurnOff(netbook);
}
static void Main(string[] args)
{
//142p
Circle o = new Circle();
o.Pi = 3.14159;
double piValue = o.Pi;
//150p
Notebook noteBook = new Notebook();
noteBook.Boot();
//153p
Computer pc1 = noteBook;
pc1.Boot();
pc1.ShutDown();
//154p
Computer pc = new Computer();
//noteBook = (Notebook)pc;
Notebook note2 = (Notebook)pc1;
note2.CloseLid();
Notebook notebook = new Notebook();
Desktop desktop = new Desktop();
NetBook netbook = new NetBook();
DeviceManager manager = new DeviceManager();
manager.TurnOff(notebook);
manager.TurnOff(desktop);
manager.TurnOff(netbook);
//155p
Computer[] machines =
new Computer[] { new Notebook(), new Desktop(), new NetBook() };
foreach (Computer device in machines)
{
manager.TurnOff(device);
}
pc = new Computer();
notebook = pc as Notebook;
if (notebook != null)
{
notebook.CloseLid();
}
//156p
int n = 5;
if (n is string)
{
Console.WriteLine("변수 n은 string 타입");
}
string txt = "text";
if (txt is int)
{
Console.WriteLine("변수 txt는 int 타입");
}
//158p
Computer computer = new Computer();
object obj1 = computer;
Computer pc2 = obj1 as Computer;
Notebook notebook1 = new Notebook();
object obj2 = notebook1;
Notebook pc3 = obj2 as Notebook;
//159p
Program program = new Program();
Console.WriteLine(program.ToString());
//161p
Computer computer1 = new Computer();
Type type = computer.GetType();
Console.WriteLine(type.FullName);
Console.WriteLine(type.IsClass);
Console.WriteLine(type.IsArray);
int n1 = 5;
string txt1 = "text";
Type intType = n1.GetType();
Console.WriteLine(intType.FullName);
Console.WriteLine(txt.GetType().FullName);
Type type1 = typeof(double);
Console.WriteLine(type1.FullName);
Console.WriteLine(typeof(System.Int16).FullName);
//162p
int n2 = 5;
int n3 = 5;
Console.WriteLine(n2.Equals(n3));
n2 = 6;
Console.WriteLine(n2.Equals(n3));
Book book1 = new Book(9788998139018);
Book book2 = new Book(9788998139018);
Console.WriteLine(book1.Equals(book2));
//163p
string txt2 = new string(new char[] { 't', 'e', 'x', 't' });
string txt3 = new string(new char[] { 't', 'e', 'x', 't' });
Console.WriteLine(txt2.Equals(txt3));
//164p
short n4 = 256;
short n5 = 32750;
short n6 = 256;
Console.WriteLine(n1.GetHashCode());
Console.WriteLine(n2.GetHashCode());
Console.WriteLine(n3.GetHashCode());
Book book3 = new Book(9788998139018);
Book book4 = new Book(9788998139018);
Console.WriteLine(book3.GetHashCode());
Console.WriteLine(book4.GetHashCode());
//165p
int n7 = 256;
int n8 = 2147483647;
Console.WriteLine(n7.GetHashCode());
Console.WriteLine(n8.GetHashCode());
//166p
bool[,] boolArray = new bool[, ] {
{ true, false }, { true, false }
};
OutputArrayInfo(boolArray);
int[] intArray = new int[] { 5, 4, 3, 2, 1, 0 };
OutputArrayInfo(intArray);
OutputArrayElements("원본 intArray", intArray);
Array.Sort(intArray);
OutputArrayElements("Array.Sort 후 intArray", intArray);
int[] copyArray = new int[intArray.Length];
Array.Copy(intArray, copyArray, intArray.Length);
OutputArrayElements("intArray로부터 복사된 copyArray", copyArray);
}
