Operators

There are seven major types of mathematical operator, and four major types of bitwise operator.

Mathematical operators

Operation	Character used	Description	Example
Addition	Performed using the "+" operator	Adds values together.	A + B = 12
Subtraction	Performed using the "-" operator	Subtracts values.	A - B = 8
Multiplication	Performed using the "*" operator	Multiplies values together.	A * B = 20
Division	Performed using the "/" operator	Divides values.	S / B = 5
Increment	Performed using the "++" operator	Adds 1 to a variable and saves the variable.	A++ = 11
Decrement	Performed using the "--" operator	Subtracts 1 from a variable and saves the variable.	B-- = 9
Modulus	Performed using the "%" operator	Finds the remainder of a division between values.	10 % 3 = 1

Note: there are variations on the increment and decrement operators. These can be performed in both prefix and postfix forms. In prefix form, (syntax "++x;") the variable will be incremented or decremented, and then the value will be used by the function calling it. In postfix form, however, (syntax "x++;") the variable will be used by the function calling it, and be incremented or decremented afterwards.

Comparison Operators

Operation	Character used	Description	Example
Equal	Performed using ==	Returns true if both inputs are the same.	value == "test"
Not Equal	performed using !=	returns true if both inputs are not the same	value != "test"
Less Than	Performed using <	Returns true if value 1 is less than or equal to value 2.	value < 0
Greater Than	performed using >	Returns true if value 1 is greater than value 2.	value > 1
Less Than or Equal	Performed using <=	Returns true if value 1 is less than or equal to value 2.	value <= 0
Greater Than or Equal	performed using >=	Returns true if value 1 is greater than or equal to value 2.	value >= 1

Bitwise operators

Operation	Character used	Description	Example
AND	Performed using "&" or "&&"	Returns true if both inputs are true.	true && false = false
OR	performed using "|" or "||"	returns true if one or both inputs are true.	true || false = true
XOR	Performed using "^"	Returns true if both inputs are different.	true ^ false = true
NOT	performed using "!"	Returns false if true, or true if false.	!true = false

The "and" and "or" operators also have variants when combined with "not", known as "nand" and "nor", but these cannot be performed directly in C#. and instead must be performed by combining the "and"/"or" with the "not" function.