An operator is a symbol that tells the compiler to perform specific mathematical or logical manipulations. C# has a rich set of built-in operators and provides the following type of operators.
Arithmetic Operators
In C#, except for + and -, the symbols for the operators are different from normal mathematical operators, as shown below.
| Operator | Description | Example |
|---|---|---|
* |
Multiplication | 4 * 3 = 12 |
/ |
Division | 12 / 3 = 4 |
++ |
Increment (increases integer value by one) | a = 10; a++ = 11 |
-- |
Decrement (decreases integer value by one) | a = 10; a-- = 9 |
% |
Modulus (returns the remainder from an integer division) | 15 % 4 = 3 |
+ |
String concatenation | "C " + "Sharp" = "C Sharp" |
Relational Operators
Following table shows all the relational operators supported by C#. Assume variable
A holds 10 and variable B holds 20, then −
| Operator | 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. |