static void Main(string[] args)
{
Stone stone = new Stone();
stone.Age = 5000;
Monkey monkey = stone;
Console.WriteLine(monkey.Age);
String s1 = "abc";
String s2 = "ab";
String s3 = "abcd";
Console.WriteLine(String.Compare(s1, s2));
Console.WriteLine(String.Compare(s1, s3));
Console.WriteLine(String.Compare(s2, s3));
LittleMonkey m = new LittleMonkey();
Console.WriteLine(m is Monkey);
Console.WriteLine(m is Stone);
Console.WriteLine(m is LittleMonkey);
Console.WriteLine(m is Object);
Console.WriteLine(m is object);
Object o = new Stone();
Console.WriteLine(o.GetType().Name);
if (o is Stone)
{
Stone s = (Stone)o;
Console.WriteLine(s.GetType().Name);
s.move();
}
Monkey monkeyKing = o as Monkey;
Console.WriteLine(monkeyKing == null);
int?x = 1;
Console.WriteLine(x);
x = null;
Console.WriteLine(x.HasValue);
int y = x ?? 0;
Console.WriteLine(x);
Console.WriteLine(y);
x = -1;
y = x ?? 100;
Console.WriteLine(y);
}
static void Main(string[] args)
{
Stone stone = new Stone();
stone.Age = 5000;
Monkey monkey = stone;
Console.WriteLine(monkey.Age);
String s1 = "abc";
String s2 = "ab";
String s3 = "abcd";
Console.WriteLine(String.Compare(s1, s2));
Console.WriteLine(String.Compare(s1, s3));
Console.WriteLine(String.Compare(s2, s3));
LittleMonkey m = new LittleMonkey();
Console.WriteLine(m is Monkey);
Console.WriteLine(m is Stone);
Console.WriteLine(m is LittleMonkey);
Console.WriteLine(m is Object);
Console.WriteLine(m is object);
Object o = new Stone();
Console.WriteLine(o.GetType().Name);
if (o is Stone)
{
Stone s = (Stone)o;
Console.WriteLine(s.GetType().Name);
s.move();
}
Monkey monkeyKing = o as Monkey;
Console.WriteLine(monkeyKing==null);
int? x = 1;
Console.WriteLine(x);
x = null;
Console.WriteLine(x.HasValue);
int y = x ?? 0;
Console.WriteLine(x);
Console.WriteLine(y);
x = -1;
y = x ?? 100;
Console.WriteLine(y);
}
