3.6.2　按位运算符

byte and, or, xor;
and = 12 & 7;   // and = 4
or = 12 | 7;    // or = 15
xor = 12 ^ 7;   // xor = 11
System.Console.WriteLine(
"and = {0} \nor = {1}\nxor = {2}",
and, or, xor);

and = 4
or = 15
xor= 11

public class BinaryConverter
{
public static void Main()
{
const int size = 64;
ulong value;
char bit;

       System.Console.Write ("Enter an integer: ");
// Use long.Parse() so as to support negative numbers
// Assumes unchecked assignment to ulong.
value = (ulong)long.Parse(System.Console.ReadLine());

       // Set initial mask to 100....
ulong mask = 1ul << size - 1;
for (int count = 0; count < size; count++)
{
bit = ((mask & value) > 0) ? '1': '0';
System.Console.Write Line(bit);
// Shift mask one location over to the right
mask >>= 1;
}
}
}

 Enter an integer: 42
000000000000000000000000000000000
0000000000000000000000000101010