C#

<br />
<br />
using System;<br />
<br />
namespace ConsoleApplication1<br />
{<br />
	/// <summary><br />
	/// Summary description for Class1.<br />
	/// </summary><br />
	class Class1<br />
	{<br />
		public static unsafe void CopyMethod(byte[] src,int cntsrc,byte[] dnc,int cntdnc,int count)<br />
		{<br />
			if(src==null||cntdnc<0||dnc==null||cntdnc<0||count<0)<br />
				throw new ArgumentException();<br />
			int srclen=src.Length;<br />
			int dnclen=dnc.Length;<br />
			if(srclen-cntsrc<count||dnclen-cntdnc<count)<br />
				throw new ArgumentException();<br />
			// The following fixed statement pins the location of<br />
			// the src and dst objects in memory so that they will<br />
			// not be moved by garbage collection.<br />
			fixed(byte* pSrc=src, pDnc=dnc)<br />
			{<br />
				byte* pscr=pSrc,pdnc=pDnc;<br />
				// Loop over the count in blocks of 4 bytes, copying an<br />
				// integer (4 bytes) at a time:<br />
				for (int n = count >> 2; n != 0; n--)<br />
				{<br />
					*((int*)pdnc) = *((int*)pscr);<br />
					pdnc += 4;<br />
					pscr += 4;<br />
				}<br />
				// Complete the copy by moving any bytes that weren't<br />
				// moved in blocks of 4:<br />
				for (count &= 3; count != 0; count--)<br />
				{<br />
					*pdnc = *pscr;<br />
					pdnc++;<br />
					pscr++;<br />
				}<br />
			}<br />
		}<br />
<br />
		static void Main(string[] args) <br />
		{<br />
			byte[] a = new byte[100];<br />
			byte[] b = new byte[100];<br />
			for(int i=0; i<100; ++i) <br />
				a[i] = (byte)i;<br />
			CopyMethod(a, 0, b, 0, 100);<br />
			Console.WriteLine("The first 10 elements are:");<br />
			for(int i=0; i<10; ++i) <br />
				Console.Write(b[i] + "{0}", i < 9 ? " " : "");<br />
			Console.WriteLine("\n");<br />
		}<br />
	}<br />
}<br />

ulong ulValue = 0xF345612347892019UL;
ulong ulMask;
int iBitValue;
 
for ( int iBit = 0; iBit < 64; ++iBit )
{
   ulMask = 1UL << iBit;
   iBitValue = (int)((ulValue & ulMask) >> iBit);
 
   System.Console.WriteLine( "Bit {0}: {1}", iBit, iBitValue );
}