Operators

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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.