An operator is simply a symbol for performing operations. Many types of operations may be available, such as arithmetic, logical, bitwise etc.

The following types of operators are available in C# language for different types of operation.

- Arithmetic Operators
- Relational Operators
- Logical Operators
- Bitwise Operators
- Assignment Operators
- Unary Operators
- Ternary Operators
- Misc Operators

The table below demonstrates all C# supported arithmetic operators. Assume that variable A is 20 and variable B is 30.

Operator |
Description |
Example |

+ | Adds two operands | A + B = 50 |

- | Subtracts second operand from the first | A - B = -10 |

* | Multiplies both operands | A * B = 600 |

/ | Divides numerator by de-numerator | B / A = 1.5 |

% | Modulus Operator and remainder of after an integer division | B % A = 0 |

++ | Increment operator increases integer value by one | A++ = 21 |

-- | Decrement operator decreases integer value by one | A-- = 19 |

The table below demonstrates all C# supported relation operators. Assume that variable A is 20 and variable B is 30.

Opertaor |
Description |
Example |

== | Checks if the values of two operands are equal or not, if yes then condition becomes true. | (A == B) is not true. |

!= | Checks if the values of two operands are equal or not, if values are not equal then condition becomes true. | (A != B) is true. |

> | Checks if the value of left operand is greater than the value of right operand, if yes then condition becomes true. | (A > B) is not true. |

< | Checks if the value of left operand is less than the value of right operand, if yes then condition becomes true. | (A < B) is true. |

>= | Checks if the value of left operand is greater than or equal to the value of right operand, if yes then condition becomes true. | (A >= B) is not true. |

<= | Checks if the value of left operand is less than or equal to the value of right operand, if yes then condition becomes true. | (A <= B) is true. |

The table below demonstrates all C# supported Logical operators. Assume that variable A is 20 and variable B is 30.

Operator |
Description |
Example |

&& | Called Logical AND operator. If both the operands are non zero then condition becomes true. | (A && B) is false. |

|| | Called Logical OR Operator. If any of the two operands is non zero then condition becomes true. | (A || B) is true. |

! | Called Logical NOT Operator. Use to reverses the logical state of its operand. If a condition is true then Logical NOT operator will make false. | !(A && B) is true. |

The operator works on bits and perform bit by bit operation. Assume that variable A is 20 and variable B is 30. The

truth tables are as follows for `&`

, `|`

, and `^`

P |
q |
p&q |
p|q |
p^q |

0 | 0 | 0 | 0 | 0 |

0 | 1 | 0 | 1 | 1 |

1 | 1 | 1 | 1 | 0 |

1 | 0 | 0 | 1 | 1 |

Assume that A = 60, and B = 13, then, they are as follows in binary format:

A = 0011 1100

B = 0000 1101

A&B | 0000 1100 |

A|B | 0011 1101 |

A^B | 0011 0001 |

~A | 1100 0011 |

The table below demonstrates all C# supported Logical operators. Assume that variable A is 60 and variable B is 13.

Operators |
Descriptions |
Example |

& | Binary AND Operator copies a bit to the result if it exists in both operands. | (A & B) = 12, which is 0000 1100 |

| | Binary OR Operator copies a bit if it exists in either operand. | (A | B) = 61, which is 0011 1101 |

^ | Binary XOR Operator copies the bit if it is set in one operand but not both. | (A ^ B) = 49, which is 0011 0001 |

~ | Binary Ones Complement Operator is unary and has the effect of 'flipping' bits. | (~A ) = -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 = 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 = 15, which is 0000 1111 |

The table below demonstrates all C# supported Assignment operators.

Operator |
Description |
Example |

= | Simple assignment operator, Assigns values from right side operands to left side operand | C = A + B assigns value of A + B into C |

+= | Add AND assignment operator, It adds right operand to the left operand and assign the result to left operand | C += A is equivalent to C = C + A |

-= | Subtract AND assignment operator, It subtracts right operand from the left operand and assign the result to left operand | C -= A is equivalent to C = C - A |

*= | Multiply AND assignment operator, It multiplies right operand with the left operand and assign the result to left operand | C *= A is equivalent to C = C * A |

/= | Divide AND assignment operator, It divides left operand with the right operand and assign the result to left operand | C /= A is equivalent to C = C / A |

%= | Modulus AND assignment operator, It takes modulus using two operands and assign the result to left operand | C %= A is equivalent to C = C % A |

<<= | Left shift AND assignment operator | C <<= 2 is same as C = C << 2 |

>>= | Right shift AND assignment operator | C >>= 2 is same as C = C >> 2 |

&= | Bitwise AND assignment operator | C &= 2 is same as C = C & 2 |

^= | bitwise exclusive OR and assignment operator | C ^= 2 is same as C = C ^ 2 |

|= | bitwise inclusive OR and assignment operator | C |= 2 is same as C = C | 2 |

few other important operators including `sizeof`

, `typeof`

and `?:`

supported by C#.

Operator |
Description |
Example |

sizeof() | Returns the size of a data type. | sizeof(int), returns 4. |

typeof() | Returns the type of a class. | typeof(StreamReader); |

& | Returns the address of an variable. | &a; returns actual address of the variable. |

* | Pointer to a variable. | *a; creates pointer named 'a' to a variable. |

? : | Conditional Expression | If Condition is true ? Then value X : Otherwise value Y |

is | Determines whether an object is of a certain type. | If( Ford is Car) // checks if Ford is an object of the Car class. |

as | Cast without raising an exception if the cast fails. | Object obj = new StringReader("Hello");
StringReader r = obj as StringReader; |

The operator precedence indicates which operator are first and next evaluated. The association specifies the direction of the operators to measure, either left-to-right or right-to-left.

**For Example:**

```
int data=20+5*5
```

The variable "data" will contain 35 as * (multiplicative operator) is evaluated before + (additive operator).

C # operators ' precedence and association are provided below.

Operator |
Description |
Example |

Postfix | () [] -> . ++ - - | Left to right |

Unary | + - ! ~ ++ - - (type)* & sizeof | Right to left |

Multiplicative | * / % | Left to right |

Additive | + - | Left to right |

Shift | << >> | Left to right |

Relational | < <= > >= | Left to right |

Equality | == != | Left to right |

Bitwise AND | & | Left to right |

Bitwise XOR | ^ | Left to right |

Bitwise OR | | | Left to right |

Logical AND | && | Left to right |

Logical OR | || | Left to right |

Conditional | ?: | Right to left |

Assignment | = += -= *= /= %=>>= <<= &= ^= |= | Right to left |

Comma | , | Left to right |