# IT. Expert System.

## C#

### Bitwise Operators

The Bitwise operators supported by C# are listed in the following table. Assume variable A holds 60 and variable B holds 13, then:

OperatorDescriptionExample
& Binary AND Operator copies a bit to the result if it exists in both operands. (A & B) will give 12, which is 0000 1100
| Binary OR Operator copies a bit if it exists in either operand. (A | B) will give 61, which is 0011 1101
^ Binary XOR Operator copies the bit if it is set in one operand but not both. (A ^ B) will give 49, which is 0011 0001
~ Binary Ones Complement Operator is unary and has the effect of 'flipping' bits. (~A ) will give -61, which is 1100 0011 in 2's complement due to a signed binary number.
<< Binary Left Shift Operator. The left operands value is moved left by the number of bits specified by the right operand. A << 2 will give 240, which is 1111 0000
>> Binary Right Shift Operator. The left operands value is moved right by the number of bits specified by the right operand. A >> 2 will give 15, which is 0000 1111

## Example

Try the following example to understand all the bitwise operators available in C#:

```using System;
namespace OperatorsAppl
{
class Program
{
static void Main(string[] args)
{
int a = 60;	           /* 60 = 0011 1100 */
int b = 13;	           /* 13 = 0000 1101 */
int c = 0;

c = a & b;           /* 12 = 0000 1100 */
Console.WriteLine("Line 1 - Value of c is {0}", c );

c = a | b;           /* 61 = 0011 1101 */
Console.WriteLine("Line 2 - Value of c is {0}", c);

c = a ^ b;           /* 49 = 0011 0001 */
Console.WriteLine("Line 3 - Value of c is {0}", c);

c = ~a;               /*-61 = 1100 0011 */
Console.WriteLine("Line 4 - Value of c is {0}", c);

c = a << 2;     /* 240 = 1111 0000 */
Console.WriteLine("Line 5 - Value of c is {0}", c);

c = a >> 2;     /* 15 = 0000 1111 */
Console.WriteLine("Line 6 - Value of c is {0}", c);
}
}
}
```

When the above code is compiled and executed, it produces the following result:

```Line 1 - Value of c is 12
Line 2 - Value of c is 61
Line 3 - Value of c is 49
Line 4 - Value of c is -61
Line 5 - Value of c is 240
Line 6 - Value of c is 15
```

Content