Language Basics

Display the bits within a byte

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/*
C#: The Complete Reference 
by Herbert Schildt 

Publisher: Osborne/McGraw-Hill (March 8, 2002)
ISBN: 0072134852
*/
// Display the bits within a byte.  
using System; 
 
public class ShowBits { 
  public static void Main() { 
    int t; 
    byte val;  
  
    val = 123; 
    for(t=128; t > 0; t = t/2) { 
      if((val & t) != 0) Console.Write("1 ");  
      if((val & t) == 0) Console.Write("0 ");  
    } 
  } 
}

Use bitwise AND to determine if a number is odd

Posted on by coder 

   

/*
C#: The Complete Reference 
by Herbert Schildt 

Publisher: Osborne/McGraw-Hill (March 8, 2002)
ISBN: 0072134852
*/
//  Use bitwise AND to determine if a number is odd. 
using System; 
 
public class IsOdd {  
  public static void Main() { 
    ushort num;  
 
    num = 10; 
 
    if((num & 1) == 1) 
      Console.WriteLine("This won't display."); 
 
    num = 11; 
 
    if((num & 1) == 1) 
      Console.WriteLine(num + " is odd."); 
 
  } 
}

Use bitwise AND to make a number even

Posted on by coder

/*
C#: The Complete Reference
by Herbert Schildt

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

// Use bitwise AND to make a number even.
using System;

public class MakeEven {
public static void Main() {
ushort num;
ushort i;

for(i = 1; i <= 10; i++) { num = i; Console.WriteLine("num: " + num); num = (ushort) (num & 0xFFFE); // num & 1111 1110 Console.WriteLine("num after turning off bit zero: " + num + " "); } } } [/csharp]

Shift Operators 2

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/*
 * C# Programmers Pocket Consultant
 * Author: Gregory S. MacBeth
 * Email: gmacbeth@comporium.net
 * Create Date: June 27, 2003
 * Last Modified Date:
 */
using System;

namespace Client.Chapter_2___Operators_and_Excpressions
{
  public class ShiftOperators
  {
    static void Main(string[] args)
    {
      uint a = 0;
      uint b = 0;

      a = 8 << 3;
      b = 32 >> 4;
    }
  }
}

Bit Shift operator

Posted on by coder

using System;

class CompoundBitOpsApp
{
static void Main(string[] args)
{
for (byte j = 0; j < 8; j++) { byte k = 1; Console.WriteLine( "1 <<= {0,3} ({1}) = {2,8} ({3,3})", Convert.ToString(j, 2), j, Convert.ToString((k <<= j), 2), k); } } } [/csharp]

Bit and, or, xor, not operator

Posted on by coder 
   
 

using System;
class LogOpsApp
{
    public static void display(byte left, byte right, byte ans, string op) {
        string Lstr = null;
        string Rstr = null;
        string Astr = null;
        Lstr = Convert.ToString(left, 2);
        if (0 != right)
            Rstr = Convert.ToString(right, 2);
        else
            Rstr = "--------";
        Astr = Convert.ToString(ans, 2);
   
        Console.WriteLine("	{0,8}
{1}	{2,8}
	{3,8}
",Lstr, op, Rstr, Astr);
    }
   
    static void Main(string[] args)
    {
        byte a, b, c, d, e, f, g;
        a = 255;
        b = 132;
        c = 85;
        byte OneOperand = 0;
   
        d = (byte)(a &amp; b);
        display (a, b, d, "&amp;");
        e = (byte)(d | c);
        display (d, c, e, "|");
        f = (byte)(e ^ a);
        display (e, a, f, "^");
        g = (byte)~f;
        display (f, OneOperand, g, "~");
    }
}