using System;
class Operators {
    static void Main() {
        int a = 10, b = 15, c = 20, d, e, h, i;
        bool f, g, j = (a == b), k;
        d = (a & b);
        e = (a | b);
        f = (j && (b == c));
        g = (j || (b == c));
        h = (a ^ b);
        i = ~b;
        k = !j;
        Console.WriteLine("{0}", d); //10
        Console.WriteLine("{0}", e); //15
        Console.WriteLine("{0}", f); //False
        Console.WriteLine("{0}", g); //False
        Console.WriteLine("{0}", h); //5
        Console.WriteLine("{0}", i); //-16
        Console.WriteLine("{0}", j); //False
        Console.WriteLine("{0}", k); //True
    }
}

    

using System;

class MainClass
{
static void Main(string[] args)
{
int i = 1;
for (int j = 0; j < 8; j++) { Console.WriteLine( "{0} << {1} = {2}", i, j, i << j); } } } [/csharp]

   
 
using System;

public class MainClass {
    public static void Main(string[] args) {
        MyObject localObject = new MyObject();

        Console.WriteLine("localObject.n is {0}", localObject.n);

        if (localObject.nextObject == null) {
            Console.WriteLine("localObject.nextObject is null");
        }

    }

    public class MyObject {
        internal int n;
        internal MyObject nextObject;
    }
}

    

   


using ThatConsoleClass = System.Console;

public class NamespacesUsing
{
    public static void Main()
    {
        ThatConsoleClass.WriteLine("Hello");
    }
}

           
          

   

/*
C#: The Complete Reference 
by Herbert Schildt 

Publisher: Osborne/McGraw-Hill (March 8, 2002)
ISBN: 0072134852
*/
// Demonstrate a namespace. 
using System; 
// Bring Counter into view. 
using Counter; 
 
// Declare a namespace for counters. 
namespace Counter { 
  // A simple countdown counter. 
  class CountDown { 
    int val; 
 
    public CountDown(int n) { 
      val = n; 
    } 
 
    public void reset(int n) { 
      val = n; 
    } 
 
    public int count() { 
      if(val > 0) return val--; 
      else return 0; 
    } 
  } 
} 
 
public class NSDemo3 { 
  public static void Main() { 
    // now, CountDown can be used directly. 
    CountDown cd1 = new CountDown(10); 
    int i; 
 
    do { 
      i = cd1.count(); 
      Console.Write(i + " "); 
    } while(i > 0); 
    Console.WriteLine(); 
 
    CountDown cd2 = new CountDown(20); 
 
    do { 
      i = cd2.count(); 
      Console.Write(i + " "); 
    } while(i > 0); 
    Console.WriteLine(); 
 
    cd2.reset(4); 
    do { 
      i = cd2.count(); 
      Console.Write(i + " "); 
    } while(i > 0); 
    Console.WriteLine(); 
  } 
}
           
          

   

/*
C#: The Complete Reference 
by Herbert Schildt 

Publisher: Osborne/McGraw-Hill (March 8, 2002)
ISBN: 0072134852
*/
// Namespaces prevent name conflicts. 
  
using System;  
  
// Declare a namespace for counters.  
namespace Counter {  
  // A simple countdown counter.  
  class CountDown {  
    int val;  
  
    public CountDown(int n) { 
      val = n; 
    }  
  
    public void reset(int n) {  
      val = n;  
    }  
  
    public int count() {  
      if(val > 0) return val--;  
      else return 0;  
    }  
  }  
}  
 
// Declare another namespace.  
namespace Counter2 {  
  /* This CountDown is in the default namespace and  
     does not conflict with the one in Counter. */ 
  class CountDown { 
    public void count() { 
      Console.WriteLine("This is count() in the " + 
                        "Counter2 namespace."); 
    } 
  } 
} 
 
public class NSDemo2 {  
  public static void Main() {  
    // This is CountDown in the Counter namespace. 
    Counter.CountDown cd1 = new Counter.CountDown(10);  
 
    // This is CountDown in the default namespace. 
    Counter2.CountDown cd2 = new Counter2.CountDown(); 
 
    int i;  
  
    do {  
      i = cd1.count();  
      Console.Write(i + " ");  
    } while(i > 0);  
    Console.WriteLine();  
  
    cd2.count(); 
  }  
}

           
          

   

/*
C#: The Complete Reference 
by Herbert Schildt 

Publisher: Osborne/McGraw-Hill (March 8, 2002)
ISBN: 0072134852
*/

using System;
// Demonstrate a namespace. 
// Declare a namespace for counters. 
namespace Counter { 
  // A simple countdown counter. 
  class CountDown { 
    int val; 
 
    public CountDown(int n) { val = n; } 
 
    public void reset(int n) { 
      val = n; 
    } 
 
    public int count() { 
      if(val > 0) return val--; 
      else return 0; 
    } 
  } 
} 
 
public class NSDemo1 { 
  public static void Main() { 
    Counter.CountDown cd1 = new Counter.CountDown(10); 
    int i; 
 
    do { 
      i = cd1.count(); 
      Console.Write(i + " "); 
    } while(i > 0); 
    Console.WriteLine(); 
 
    Counter.CountDown cd2 = new Counter.CountDown(20); 
 
    do { 
      i = cd2.count(); 
      Console.Write(i + " "); 
    } while(i > 0); 
    Console.WriteLine(); 
 
    cd2.reset(4); 
    do { 
      i = cd2.count(); 
      Console.Write(i + " "); 
    } while(i > 0); 
    Console.WriteLine(); 
  } 
}